#2237A8#2237A8

#2237A8 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.3% C 0.181 H 268.2°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#2237A8
RGB	rgb(34, 55, 168)
HSL	hsl(231, 66%, 40%)
HSV	hsv(231, 80%, 66%)
CMYK	cmyk(79.8%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(29.16, 34.03, -62.58)
CIE-LCH	lch(29.16, 71.24, 298.54°)
OKLab	oklab(40.28% -0.0056 -0.1812)
OKLCH	oklch(40.28% 0.181 268.2)
XYZ	xyz(9.0913, 5.8986, 37.6976)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2237A8 #A89322

analogous

#227AA8 #2237A8 #5022A8

triadic

#2237A8 #A82237 #37A822

tetradic

#2237A8 #A8227A #A89322 #22A850

square

#2237A8 #A8227A #A89322 #22A850

split-complementary

#2237A8 #A85022 #7AA822

monochromatic

#0D1642 #182675 #2237A8 #324BD5 #6578E0

Accessibility & contrast

On white

9.63

#2237A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#2237A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2237A8

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2237A8	#FFFFFF	#000000	##FFFFFF
##2237A8	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAC

Deuteranopia (green-blind)

#003EA6

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2237a8;
/* rgb */ color: rgb(34, 55, 168);
/* oklch */ color: oklch(40.3% 0.181 268.2);

Tailwind

colors: {
  custom: {
    50: '#756ec3',
    500: '#2237a8',
    950: '#000000',
  },
}

SCSS

$custom: #2237a8;
$custom-light: #756ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#2237a8",
  "rgb": {
    "r": 34,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 230.597,
    "s": 66.337,
    "l": 39.608
  },
  "oklch": {
    "l": 0.40279,
    "c": 0.18129,
    "h": 268.2
  },
  "luminance": 0.059
}

Semantic roles & 50–950 ramp

primary

#2237A8

secondary

#C5B561

accent

#CF3FE9

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2237A8

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

Preview Lab → · Contrast checker → · Palette generator →