#237EA8#237EA8

#237EA8 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.1% C 0.104 H 233.6°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#237EA8
RGB	rgb(35, 126, 168)
HSL	hsl(199, 66%, 40%)
HSV	hsv(199, 79%, 66%)
CMYK	cmyk(79.2%, 25%, 0%, 34.1%)
CIE-LAB	lab(49.62, -11.35, -29.78)
CIE-LCH	lch(49.62, 31.86, 249.14°)
OKLab	oklab(56.06% -0.0618 -0.0839)
OKLCH	oklch(56.06% 0.104 233.6)
XYZ	xyz(15.2190, 18.1043, 39.7306)
Luminance	0.1811 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237EA8 #A84D23

analogous

#23A88F #237EA8 #233CA8

triadic

#237EA8 #A8237E #7EA823

tetradic

#237EA8 #8F23A8 #A84D23 #3CA823

square

#237EA8 #8F23A8 #A84D23 #3CA823

split-complementary

#237EA8 #A8233C #A88F23

monochromatic

#0E3243 #185875 #237EA8 #34A2D5 #66B9DF

Accessibility & contrast

On white

4.54

#237EA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#237EA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237EA8

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237EA8	#FFFFFF	#000000	##000000
##237EA8	1.00	4.54	4.62	4.62
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#697DAA

Deuteranopia (green-blind)

#5871A7

Tritanopia (blue-blind)

#00898C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #237ea8;
/* rgb */ color: rgb(35, 126, 168);
/* oklch */ color: oklch(56.1% 0.104 233.6);

Tailwind

colors: {
  custom: {
    50: '#73a3c2',
    500: '#237ea8',
    950: '#000000',
  },
}

SCSS

$custom: #237ea8;
$custom-light: #73a3c2;
$custom-dark: #000000;

JSON

{
  "hex": "#237ea8",
  "rgb": {
    "r": 35,
    "g": 126,
    "b": 168
  },
  "hsl": {
    "h": 198.947,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.5606,
    "c": 0.10427,
    "h": 233.6
  },
  "luminance": 0.18106
}

Semantic roles & 50–950 ramp

primary

#237EA8

secondary

#C58162

accent

#753FE8

background

#F7FAFB

surface

#EEF3F7

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #237EA8

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

Preview Lab → · Contrast checker → · Palette generator →