#237C9F Color

#237C9F is rgb(35, 124, 159) in RGB, hsl(197, 64%, 38%) in HSL, and about cmyk(78%, 22%, 0%, 38%) in CMYK. It has no registered color name of its own — the closest is Cerulean (#007BA7), clearly related but distinguishable side by side at ΔE 5.47. White text is the more readable choice on this background.

#237C9F

HEX#237C9F

RGBrgb(35, 124, 159)

HSLhsl(197, 64%, 38%)

HSVhsv(197, 78%, 62%)

CMYKcmyk(78%, 22%, 0%, 38%)

OKLCHoklch(55.1% 0.097 229.3)

LABlab(48.17% -17.23 -26.74)

LCHlch(48.17% 31.81 237.21)

What #237C9F 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 #237C9F, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Cerulean#007BA7ΔE 5.47 Zircon Blue#00849DΔE 8.54 Sea Blue#006994ΔE 9.11 Teal Blue#367588ΔE 10.13 Blue Sapphire#126180ΔE 10.94 Steel Blue#4682B4ΔE 11.42

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

#237C9F Channel Values

How #237C9F breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 35 · G 124 · B 159	8-bit channels as sent to the display
HSL	H 197° · S 64% · L 38%	Easiest model for building lighter and darker variants
HSV	H 197° · S 78% · V 62%	Matches the picker in most design tools
CMYK	C 78% · M 22% · Y 0% · K 38%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	4.71:1 vs white · 4.46:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #237C9F 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 text4.71:1AA normal AA large AAA normal

Fails AABlack text4.46:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #237C9F in the contrast checker.

Colors That Go With #237C9F

Pairings derived from color-wheel relationships. The complementary color sits opposite #237C9F; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #237C9F

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

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #237C9F.

How #237C9F 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#237C9F

Protanopia#73739F

Protanomaly#5D769F

Deuteranopia#6969A0

Deuteranomaly#5571A0

Tritanopia#008181

Tritanomaly#117F8E

Achromatopsia#737373

Test a full palette in the color blindness simulator.

Using #237C9F in Code

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

CSS custom property--color-237c9f: #237C9F;

CSS backgroundbackground-color: #237C9F;

Tailwind configcolors: { 'color-237c9f': '#237C9F' }

SwiftUIColor(red: 0.137, green: 0.486, blue: 0.624)

Android XML<color name="color_237c9f">#237C9F</color>

SVG fillfill="#237C9F"

More Teal Colors

#237C9F sits in the teal family. These are its neighbours across that family's full range, each with its own breakdown.

002424 f5ffff 002a38 f0ffff 002d2e eefbfb 003333 ecfeff 003542 ecf7f9 003838 ebffff 006466 009999 00ebeb 0d1616 192929 24fbff 36747d 50bfe6 73a9c2 8dd9cc aec6cf ccffff

#237C9F Frequently Asked Questions

What color is #237C9F?

#237C9F is a dark teal — rgb(35, 124, 159) in RGB and hsl(197, 64%, 38%) in HSL. It carries no registered color name of its own; the closest named color is Cerulean (#007BA7), which is clearly related but distinguishable side by side at a CIE76 distance of 5.47.

What is the RGB value of #237C9F?

#237C9F is rgb(35, 124, 159) — red 35, green 124, and blue 159 on the 0-255 scale.

What is the CMYK value of #237C9F?

#237C9F converts to approximately cmyk(78%, 22%, 0%, 38%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #237C9F be black or white?

White text is the more readable choice. #237C9F scores 4.71:1 against white and 4.46:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #237C9F as a CSS color keyword?

No. #237C9F 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 11.42, which is visibly different.

Open #237C9F in a Tool

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