#2431A8#2431A8

#2431A8 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.3% C 0.187 H 269.8°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#2431A8
RGB	rgb(36, 49, 168)
HSL	hsl(234, 65%, 40%)
HSV	hsv(234, 79%, 66%)
CMYK	cmyk(78.6%, 70.8%, 0%, 34.1%)
CIE-LAB	lab(27.84, 38.01, -64.74)
CIE-LCH	lch(27.84, 75.08, 300.42°)
OKLab	oklab(39.35% -0.0007 -0.1875)
OKLCH	oklch(39.35% 0.187 269.8)
XYZ	xyz(8.8913, 5.3978, 37.6115)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2431A8 #A89B24

analogous

#2473A8 #2431A8 #5924A8

triadic

#2431A8 #A82431 #31A824

tetradic

#2431A8 #A82473 #A89B24 #24A859

square

#2431A8 #A82473 #A89B24 #24A859

split-complementary

#2431A8 #A85924 #73A824

monochromatic

#0E1443 #192276 #2431A8 #3545D4 #6873DF

Accessibility & contrast

On white

10.10

#2431A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#2431A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2431A8

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2431A8	#FFFFFF	#000000	##FFFFFF
##2431A8	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AC

Deuteranopia (green-blind)

#003BA6

Tritanopia (blue-blind)

#005269

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2431a8;
/* rgb */ color: rgb(36, 49, 168);
/* oklch */ color: oklch(39.3% 0.187 269.8);

Tailwind

colors: {
  custom: {
    50: '#766ac3',
    500: '#2431a8',
    950: '#000000',
  },
}

SCSS

$custom: #2431a8;
$custom-light: #766ac3;
$custom-dark: #000000;

JSON

{
  "hex": "#2431a8",
  "rgb": {
    "r": 36,
    "g": 49,
    "b": 168
  },
  "hsl": {
    "h": 234.091,
    "s": 64.706,
    "l": 40
  },
  "oklch": {
    "l": 0.39349,
    "c": 0.18749,
    "h": 269.8
  },
  "luminance": 0.05399
}

Semantic roles & 50–950 ramp

primary

#2431A8

secondary

#C4BB63

accent

#D740E8

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #2431A8

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

Preview Lab → · Contrast checker → · Palette generator →