#237CA8#237CA8

#237CA8 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.6% C 0.105 H 235.4°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#237CA8
RGB	rgb(35, 124, 168)
HSL	hsl(200, 66%, 40%)
HSV	hsv(200, 79%, 66%)
CMYK	cmyk(79.2%, 26.2%, 0%, 34.1%)
CIE-LAB	lab(49.00, -10.20, -30.74)
CIE-LCH	lch(49.00, 32.39, 251.65°)
OKLab	oklab(55.57% -0.0599 -0.0868)
OKLCH	oklch(55.57% 0.105 235.4)
XYZ	xyz(14.9658, 17.5980, 39.6462)
Luminance	0.1760 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237CA8 #A84F23

analogous

#23A892 #237CA8 #2339A8

triadic

#237CA8 #A8237C #7CA823

tetradic

#237CA8 #9223A8 #A84F23 #39A823

square

#237CA8 #9223A8 #A84F23 #39A823

split-complementary

#237CA8 #A82339 #A89223

monochromatic

#0E3143 #185775 #237CA8 #349FD5 #66B7DF

Accessibility & contrast

On white

4.65

#237CA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#237CA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237CA8

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237CA8	#FFFFFF	#000000	##FFFFFF
##237CA8	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677BAA

Deuteranopia (green-blind)

#556FA7

Tritanopia (blue-blind)

#00878B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237ca8;
/* rgb */ color: rgb(35, 124, 168);
/* oklch */ color: oklch(55.6% 0.105 235.4);

Tailwind

colors: {
  custom: {
    50: '#73a1c2',
    500: '#237ca8',
    950: '#000000',
  },
}

SCSS

$custom: #237ca8;
$custom-light: #73a1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#237ca8",
  "rgb": {
    "r": 35,
    "g": 124,
    "b": 168
  },
  "hsl": {
    "h": 199.85,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.55568,
    "c": 0.10544,
    "h": 235.4
  },
  "luminance": 0.176
}

Semantic roles & 50–950 ramp

primary

#237CA8

secondary

#C58362

accent

#773FE8

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #237CA8

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

Preview Lab → · Contrast checker → · Palette generator →