#2531A9#2531A9

#2531A9 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.5% C 0.189 H 270.0°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#2531A9
RGB	rgb(37, 49, 169)
HSL	hsl(235, 64%, 40%)
HSV	hsv(235, 78%, 66%)
CMYK	cmyk(78.1%, 71%, 0%, 33.7%)
CIE-LAB	lab(27.99, 38.46, -65.10)
CIE-LCH	lch(27.99, 75.61, 300.57°)
OKLab	oklab(39.5% 0.0001 -0.1885)
OKLCH	oklch(39.5% 0.189 270)
XYZ	xyz(9.0202, 5.4535, 38.1057)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2531A9 #A99D25

analogous

#2573A9 #2531A9 #5B25A9

triadic

#2531A9 #A92531 #31A925

tetradic

#2531A9 #A92573 #A99D25 #25A95B

square

#2531A9 #A92573 #A99D25 #25A95B

split-complementary

#2531A9 #A95B25 #73A925

monochromatic

#0F1445 #1A2277 #2531A9 #3846D3 #6A75DE

Accessibility & contrast

On white

10.04

#2531A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#2531A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2531A9

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2531A9	#FFFFFF	#000000	##FFFFFF
##2531A9	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AD

Deuteranopia (green-blind)

#003CA7

Tritanopia (blue-blind)

#005369

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2531a9;
/* rgb */ color: rgb(37, 49, 169);
/* oklch */ color: oklch(39.5% 0.189 270.0);

Tailwind

colors: {
  custom: {
    50: '#766ac4',
    500: '#2531a9',
    950: '#000000',
  },
}

SCSS

$custom: #2531a9;
$custom-light: #766ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#2531a9",
  "rgb": {
    "r": 37,
    "g": 49,
    "b": 169
  },
  "hsl": {
    "h": 234.545,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.39502,
    "c": 0.1885,
    "h": 270
  },
  "luminance": 0.05455
}

Semantic roles & 50–950 ramp

primary

#2531A9

secondary

#C4BC65

accent

#D841E7

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #2531A9

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

Preview Lab → · Contrast checker → · Palette generator →