#2437A8#2437A8

#2437A8 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.4% C 0.181 H 268.8°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#2437A8
RGB	rgb(36, 55, 168)
HSL	hsl(231, 65%, 40%)
HSV	hsv(231, 79%, 66%)
CMYK	cmyk(78.6%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(29.24, 34.21, -62.43)
CIE-LCH	lch(29.24, 71.19, 298.72°)
OKLab	oklab(40.37% -0.0038 -0.1807)
OKLCH	oklch(40.37% 0.181 268.8)
XYZ	xyz(9.1592, 5.9336, 37.7008)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2437A8 #A89524

analogous

#2479A8 #2437A8 #5324A8

triadic

#2437A8 #A82437 #37A824

tetradic

#2437A8 #A82479 #A89524 #24A853

square

#2437A8 #A82479 #A89524 #24A853

split-complementary

#2437A8 #A85324 #79A824

monochromatic

#0E1643 #192676 #2437A8 #354CD4 #6879DF

Accessibility & contrast

On white

9.60

#2437A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#2437A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2437A8

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2437A8	#FFFFFF	#000000	##FFFFFF
##2437A8	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAC

Deuteranopia (green-blind)

#003FA6

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2437a8;
/* rgb */ color: rgb(36, 55, 168);
/* oklch */ color: oklch(40.4% 0.181 268.8);

Tailwind

colors: {
  custom: {
    50: '#756ec3',
    500: '#2437a8',
    950: '#000000',
  },
}

SCSS

$custom: #2437a8;
$custom-light: #756ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#2437a8",
  "rgb": {
    "r": 36,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 231.364,
    "s": 64.706,
    "l": 40
  },
  "oklch": {
    "l": 0.40369,
    "c": 0.18077,
    "h": 268.8
  },
  "luminance": 0.05935
}

Semantic roles & 50–950 ramp

primary

#2437A8

secondary

#C4B663

accent

#D040E8

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2437A8

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

Preview Lab → · Contrast checker → · Palette generator →