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#287DAF Color

#287DAF is rgb(40, 125, 175) in RGB, hsl(202, 63%, 42%) in HSL, and about cmyk(77%, 29%, 0%, 31%) in CMYK. It has no registered color name of its own — the closest is Steel Blue (#4682B4), clearly related but distinguishable side by side at ΔE 5.18. Black text is the more readable choice on this background.

#287DAF
HEX#287DAF
RGBrgb(40, 125, 175)
HSLhsl(202, 63%, 42%)
HSVhsv(202, 77%, 69%)
CMYKcmyk(77%, 29%, 0%, 31%)
OKLCHoklch(56.3% 0.11 239.4)
LABlab(49.22% -12.47 -34.36)
LCHlch(49.22% 36.55 250.06)

What #287DAF 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 #287DAF, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Steel Blue#4682B4ΔE 5.18Cerulean#007BA7ΔE 5.31Blue (NCS)#0087BDΔE 5.94Star Command Blue#007BB8ΔE 6.61Sea Blue#006994ΔE 8.78Green-blue (Crayola)#2887C8ΔE 9.11

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

#287DAF Channel Values

How #287DAF 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 40 · G 125 · B 1758-bit channels as sent to the display
HSLH 202° · S 63% · L 42%Easiest model for building lighter and darker variants
HSVH 202° · S 77% · V 69%Matches the picker in most design tools
CMYKC 77% · M 29% · Y 0% · K 31%Approximate ink mix; confirm with an ICC profile before printing
Luminance4.52:1 vs white · 4.64:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #287DAF 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.

TextWhite text4.52:1AA normal AA large AAA normal
TextBlack text4.64:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #287DAF in the contrast checker.

Colors That Go With #287DAF

Pairings derived from color-wheel relationships. The complementary color sits opposite #287DAF; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#287DAF
Complementary
#AF5928
Analogous
#28AF9D
Analogous
#283AAF
Triadic
#AF287D
Triadic
#7DAF28
Split comp.
#AF283A
Split comp.
#AF9D28

Tints & Shades of #287DAF

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

#2F95D0
#50A6D7
#72B7DF
#93C8E6
#B4D9EE
#D5EAF6

Shades

#236E9A
#1D5C81
#194D6C
#133C53
#0E2D3E
#081B25

Want a full 50-950 ramp with semantic roles? Generate design tokens from #287DAF.

How #287DAF 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#287DAF
Protanopia#7474AF
Protanomaly#5E78AF
Deuteranopia#6A6AB0
Deuteranomaly#5772B0
Tritanopia#008585
Tritanomaly#0D8297
Achromatopsia#767676

Test a full palette in the color blindness simulator.

Using #287DAF in Code

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

CSS custom property--color-287daf: #287DAF;
CSS backgroundbackground-color: #287DAF;
Tailwind configcolors: { 'color-287daf': '#287DAF' }
SwiftUIColor(red: 0.157, green: 0.490, blue: 0.686)
Android XML<color name="color_287daf">#287DAF</color>
SVG fillfill="#287DAF"

More Blue Colors

#287DAF sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#287DAF Frequently Asked Questions

What color is #287DAF?

#287DAF is a mid-tone blue — rgb(40, 125, 175) in RGB and hsl(202, 63%, 42%) in HSL. It carries no registered color name of its own; the closest named color is Steel Blue (#4682B4), which is clearly related but distinguishable side by side at a CIE76 distance of 5.18.

What is the RGB value of #287DAF?

#287DAF is rgb(40, 125, 175) — red 40, green 125, and blue 175 on the 0-255 scale.

What is the CMYK value of #287DAF?

#287DAF converts to approximately cmyk(77%, 29%, 0%, 31%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #287DAF be black or white?

Black text is the more readable choice. #287DAF scores 4.52:1 against white and 4.64:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #287DAF as a CSS color keyword?

No. #287DAF 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 steelblue (#4682B4) at a CIE76 distance of 5.18, which is clearly related but distinguishable side by side.

Open #287DAF 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.