#237EA4#237EA4

#237EA4 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 55.9% C 0.100 H 231.0°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#237EA4
RGB	rgb(35, 126, 164)
HSL	hsl(198, 65%, 39%)
HSV	hsv(198, 79%, 64%)
CMYK	cmyk(78.7%, 23.2%, 0%, 35.7%)
CIE-LAB	lab(49.44, -12.78, -27.73)
CIE-LCH	lch(49.44, 30.53, 245.26°)
OKLab	oklab(55.86% -0.0633 -0.078)
OKLCH	oklch(55.86% 0.1 231)
XYZ	xyz(14.8521, 17.9576, 37.7981)
Luminance	0.1796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237EA4 #A44923

analogous

#23A48A #237EA4 #233EA4

triadic

#237EA4 #A4237E #7EA423

tetradic

#237EA4 #8A23A4 #A44923 #3EA423

square

#237EA4 #8A23A4 #A44923 #3EA423

split-complementary

#237EA4 #A4233E #A48A23

monochromatic

#0D313F #185772 #237EA4 #31A3D3 #64BADE

Accessibility & contrast

On white

4.57

#237EA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#237EA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237EA4

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237EA4	#FFFFFF	#000000	##000000
##237EA4	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7CA6

Deuteranopia (green-blind)

#5A70A3

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #237ea4;
/* rgb */ color: rgb(35, 126, 164);
/* oklch */ color: oklch(55.9% 0.100 231.0);

Tailwind

colors: {
  custom: {
    50: '#73a3bf',
    500: '#237ea4',
    950: '#000000',
  },
}

SCSS

$custom: #237ea4;
$custom-light: #73a3bf;
$custom-dark: #000000;

JSON

{
  "hex": "#237ea4",
  "rgb": {
    "r": 35,
    "g": 126,
    "b": 164
  },
  "hsl": {
    "h": 197.674,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.5586,
    "c": 0.10048,
    "h": 231
  },
  "luminance": 0.17959
}

Semantic roles & 50–950 ramp

primary

#237EA4

secondary

#C37D60

accent

#7140E8

background

#F7FAFB

surface

#EEF3F7

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #237EA4

Body copy rendered with the generated semantic roles for this colour.

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