#2437A9#2437A9

#2437A9 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.5% C 0.182 H 268.8°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#2437A9
RGB	rgb(36, 55, 169)
HSL	hsl(231, 65%, 40%)
HSV	hsv(231, 79%, 66%)
CMYK	cmyk(78.7%, 67.5%, 0%, 33.7%)
CIE-LAB	lab(29.34, 34.58, -62.88)
CIE-LCH	lch(29.34, 71.76, 298.81°)
OKLab	oklab(40.47% -0.0038 -0.182)
OKLCH	oklch(40.47% 0.182 268.8)
XYZ	xyz(9.2527, 5.9710, 38.1933)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2437A9 #A99624

analogous

#2479A9 #2437A9 #5424A9

triadic

#2437A9 #A92437 #37A924

tetradic

#2437A9 #A92479 #A99624 #24A954

square

#2437A9 #A92479 #A99624 #24A954

split-complementary

#2437A9 #A95424 #79A924

monochromatic

#0F1644 #192777 #2437A9 #364DD4 #6879DF

Accessibility & contrast

On white

9.57

#2437A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#2437A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2437A9

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2437A9	#FFFFFF	#000000	##FFFFFF
##2437A9	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAD

Deuteranopia (green-blind)

#003FA7

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2437a9;
/* rgb */ color: rgb(36, 55, 169);
/* oklch */ color: oklch(40.5% 0.182 268.8);

Tailwind

colors: {
  custom: {
    50: '#766ec4',
    500: '#2437a9',
    950: '#000000',
  },
}

SCSS

$custom: #2437a9;
$custom-light: #766ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#2437a9",
  "rgb": {
    "r": 36,
    "g": 55,
    "b": 169
  },
  "hsl": {
    "h": 231.429,
    "s": 64.878,
    "l": 40.196
  },
  "oklch": {
    "l": 0.40467,
    "c": 0.18207,
    "h": 268.8
  },
  "luminance": 0.05972
}

Semantic roles & 50–950 ramp

primary

#2437A9

secondary

#C5B764

accent

#D040E8

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2437A9

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

Preview Lab → · Contrast checker → · Palette generator →