#237CC4#237CC4

#237CC4 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.137 H 248.1°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#237CC4
RGB	rgb(35, 124, 196)
HSL	hsl(207, 70%, 45%)
HSV	hsv(207, 82%, 77%)
CMYK	cmyk(82.1%, 36.7%, 0%, 23.1%)
CIE-LAB	lab(50.40, 0.18, -44.69)
CIE-LCH	lch(50.40, 44.69, 270.23°)
OKLab	oklab(57.13% -0.0513 -0.1274)
OKLCH	oklch(57.13% 0.137 248.1)
XYZ	xyz(17.8608, 18.7559, 54.8928)
Luminance	0.1876 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237CC4 #C46B23

analogous

#23C4BB #237CC4 #232CC4

triadic

#237CC4 #C4237C #7CC423

tetradic

#237CC4 #BB23C4 #C46B23 #2CC423

square

#237CC4 #BB23C4 #C46B23 #2CC423

split-complementary

#237CC4 #C4232C #C4BB23

monochromatic

#103A5C #1A5B90 #237CC4 #469ADE #7AB6E7

Accessibility & contrast

On white

4.42

#237CC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#237CC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237CC4

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237CC4	#FFFFFF	#000000	##000000
##237CC4	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A80C7

Deuteranopia (green-blind)

#4271C3

Tritanopia (blue-blind)

#008D96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #237cc4;
/* rgb */ color: rgb(35, 124, 196);
/* oklch */ color: oklch(57.1% 0.137 248.1);

Tailwind

colors: {
  custom: {
    50: '#79a1d6',
    500: '#237cc4',
    950: '#000000',
  },
}

SCSS

$custom: #237cc4;
$custom-light: #79a1d6;
$custom-dark: #000000;

JSON

{
  "hex": "#237cc4",
  "rgb": {
    "r": 35,
    "g": 124,
    "b": 196
  },
  "hsl": {
    "h": 206.832,
    "s": 69.697,
    "l": 45.294
  },
  "oklch": {
    "l": 0.57129,
    "c": 0.13739,
    "h": 248.1
  },
  "luminance": 0.18758
}

Semantic roles & 50–950 ramp

primary

#237CC4

secondary

#CF9D74

accent

#8B3BED

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #237CC4

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

Preview Lab → · Contrast checker → · Palette generator →