#237CA6#237CA6

#237CA6 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.5% C 0.103 H 234.1°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#237CA6
RGB	rgb(35, 124, 166)
HSL	hsl(199, 65%, 39%)
HSV	hsv(199, 79%, 65%)
CMYK	cmyk(78.9%, 25.3%, 0%, 34.9%)
CIE-LAB	lab(48.91, -10.92, -29.72)
CIE-LCH	lch(48.91, 31.66, 249.82°)
OKLab	oklab(55.47% -0.0606 -0.0838)
OKLCH	oklch(55.47% 0.103 234.1)
XYZ	xyz(14.7810, 17.5240, 38.6725)
Luminance	0.1753 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237CA6 #A64D23

analogous

#23A68F #237CA6 #233AA6

triadic

#237CA6 #A6237C #7CA623

tetradic

#237CA6 #8F23A6 #A64D23 #3AA623

square

#237CA6 #8F23A6 #A64D23 #3AA623

split-complementary

#237CA6 #A6233A #A68F23

monochromatic

#0E3041 #185673 #237CA6 #32A0D4 #65B8DF

Accessibility & contrast

On white

4.66

#237CA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#237CA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237CA6

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237CA6	#FFFFFF	#000000	##FFFFFF
##237CA6	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677BA8

Deuteranopia (green-blind)

#566FA5

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237ca6;
/* rgb */ color: rgb(35, 124, 166);
/* oklch */ color: oklch(55.5% 0.103 234.1);

Tailwind

colors: {
  custom: {
    50: '#73a1c0',
    500: '#237ca6',
    950: '#000000',
  },
}

SCSS

$custom: #237ca6;
$custom-light: #73a1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#237ca6",
  "rgb": {
    "r": 35,
    "g": 124,
    "b": 166
  },
  "hsl": {
    "h": 199.237,
    "s": 65.174,
    "l": 39.412
  },
  "oklch": {
    "l": 0.55466,
    "c": 0.10343,
    "h": 234.1
  },
  "luminance": 0.17526
}

Semantic roles & 50–950 ramp

primary

#237CA6

secondary

#C48161

accent

#7640E8

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #237CA6

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

Preview Lab → · Contrast checker → · Palette generator →