#237DC4#237DC4

#237DC4 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.4% C 0.136 H 247.5°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#237DC4
RGB	rgb(35, 125, 196)
HSL	hsl(206, 70%, 45%)
HSV	hsv(206, 82%, 77%)
CMYK	cmyk(82.1%, 36.2%, 0%, 23.1%)
CIE-LAB	lab(50.70, -0.42, -44.22)
CIE-LCH	lch(50.70, 44.23, 269.45°)
OKLab	oklab(57.36% -0.0522 -0.1261)
OKLCH	oklch(57.36% 0.136 247.5)
XYZ	xyz(17.9867, 19.0078, 54.9347)
Luminance	0.1901 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237DC4 #C46A23

analogous

#23C4BB #237DC4 #232CC4

triadic

#237DC4 #C4237D #7DC423

tetradic

#237DC4 #BB23C4 #C46A23 #2CC423

square

#237DC4 #BB23C4 #C46A23 #2CC423

split-complementary

#237DC4 #C4232C #C4BB23

monochromatic

#103B5C #1A5C90 #237DC4 #469BDE #7AB7E7

Accessibility & contrast

On white

4.37

#237DC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#237DC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237DC4

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237DC4	#FFFFFF	#000000	##000000
##237DC4	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B81C7

Deuteranopia (green-blind)

#4372C3

Tritanopia (blue-blind)

#008E97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #237dc4;
/* rgb */ color: rgb(35, 125, 196);
/* oklch */ color: oklch(57.4% 0.136 247.5);

Tailwind

colors: {
  custom: {
    50: '#79a2d6',
    500: '#237dc4',
    950: '#000000',
  },
}

SCSS

$custom: #237dc4;
$custom-light: #79a2d6;
$custom-dark: #000000;

JSON

{
  "hex": "#237dc4",
  "rgb": {
    "r": 35,
    "g": 125,
    "b": 196
  },
  "hsl": {
    "h": 206.46,
    "s": 69.697,
    "l": 45.294
  },
  "oklch": {
    "l": 0.57362,
    "c": 0.13643,
    "h": 247.5
  },
  "luminance": 0.1901
}

Semantic roles & 50–950 ramp

primary

#237DC4

secondary

#CF9C74

accent

#893BED

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #237DC4

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

Preview Lab → · Contrast checker → · Palette generator →