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#657F9F Color

#657F9F is rgb(101, 127, 159) in RGB, hsl(213, 23%, 51%) in HSL, and about cmyk(36%, 20%, 0%, 38%) in CMYK. It has no registered color name of its own — the closest is Shadow Blue (#778BA5), clearly related but distinguishable side by side at ΔE 6.42. Black text is the more readable choice on this background.

#657F9F
HEX#657F9F
RGBrgb(101, 127, 159)
HSLhsl(213, 23%, 51%)
HSVhsv(213, 36%, 62%)
CMYKcmyk(36%, 20%, 0%, 38%)
OKLCHoklch(58.8% 0.058 253.9)
LABlab(52.08% -3.46 -20.45)
LCHlch(52.08% 20.74 260.41)

What #657F9F Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #657F9F, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Shadow Blue#778BA5ΔE 6.42Air Force Blue#5D8AA8ΔE 6.97Slate Gray#708090ΔE 9.73Rhythm#777696ΔE 9.85Light Slate Gray#778899ΔE 9.88Silver Lake Blue#5D89BAΔE 11.01

Browse the full index of named colors A-Z or every blue in the library.

#657F9F Channel Values

How #657F9F breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 101 · G 127 · B 1598-bit channels as sent to the display
HSLH 213° · S 23% · L 51%Easiest model for building lighter and darker variants
HSVH 213° · S 36% · V 62%Matches the picker in most design tools
CMYKC 36% · M 20% · Y 0% · K 38%Approximate ink mix; confirm with an ICC profile before printing
Luminance4.13:1 vs white · 5.09:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #657F9F background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

Fails AAWhite text4.13:1AA normal AA large AAA normal
TextBlack text5.09:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #657F9F in the contrast checker.

Colors That Go With #657F9F

Pairings derived from color-wheel relationships. The complementary color sits opposite #657F9F; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#657F9F
Complementary
#9F8565
Analogous
#659C9F
Analogous
#68659F
Triadic
#9F657F
Triadic
#7F9F65
Split comp.
#9F6865
Split comp.
#9C9F65

Tints & Shades of #657F9F

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

#7B91AD
#8EA1B8
#A4B3C6
#BAC6D4
#D0D8E2
#E3E8ED

Shades

#566E8A
#4B5F77
#3D4D61
#2F3C4B
#212A35
#161B23

Want a full 50-950 ramp with semantic roles? Generate design tokens from #657F9F.

How #657F9F Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#657F9F
Protanopia#7B7B9F
Protanomaly#737D9F
Deuteranopia#77779F
Deuteranomaly#707A9F
Tritanopia#5E8484
Tritanomaly#61828F
Achromatopsia#7D7D7D

Test a full palette in the color blindness simulator.

Using #657F9F in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-657f9f: #657F9F;
CSS backgroundbackground-color: #657F9F;
Tailwind configcolors: { 'color-657f9f': '#657F9F' }
SwiftUIColor(red: 0.396, green: 0.498, blue: 0.624)
Android XML<color name="color_657f9f">#657F9F</color>
SVG fillfill="#657F9F"

More Blue Colors

#657F9F sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#657F9F Frequently Asked Questions

What color is #657F9F?

#657F9F is a mid-tone blue — rgb(101, 127, 159) in RGB and hsl(213, 23%, 51%) in HSL. It carries no registered color name of its own; the closest named color is Shadow Blue (#778BA5), which is clearly related but distinguishable side by side at a CIE76 distance of 6.42.

What is the RGB value of #657F9F?

#657F9F is rgb(101, 127, 159) — red 101, green 127, and blue 159 on the 0-255 scale.

What is the CMYK value of #657F9F?

#657F9F converts to approximately cmyk(36%, 20%, 0%, 38%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #657F9F be black or white?

Black text is the more readable choice. #657F9F scores 4.13:1 against white and 5.09:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #657F9F as a CSS color keyword?

No. #657F9F is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is slategray (#708090) at a CIE76 distance of 9.73, which is clearly related but distinguishable side by side.

Open #657F9F in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

Keep exploring: every blue in the color library, the guide to shades of blue, or the full color library.