#2531AF#2531AF

#2531AF is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.1% C 0.196 H 269.8°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#2531AF
RGB	rgb(37, 49, 175)
HSL	hsl(235, 65%, 42%)
HSV	hsv(235, 79%, 69%)
CMYK	cmyk(78.9%, 72%, 0%, 31.4%)
CIE-LAB	lab(28.60, 40.58, -67.69)
CIE-LCH	lch(28.60, 78.92, 300.94°)
OKLab	oklab(40.12% -0.0006 -0.196)
OKLCH	oklch(40.12% 0.196 269.8)
XYZ	xyz(9.5965, 5.6840, 41.1405)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.79

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2531AF #AFA325

analogous

#2576AF #2531AF #5E25AF

triadic

#2531AF #AF2531 #31AF25

tetradic

#2531AF #AF2576 #AFA325 #25AF5E

square

#2531AF #AF2576 #AFA325 #25AF5E

split-complementary

#2531AF #AF5E25 #76AF25

monochromatic

#10154A #1A237C #2531AF #3C49D6 #6E78E0

Accessibility & contrast

On white

9.83

#2531AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#2531AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2531AF

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2531AF	#FFFFFF	#000000	##FFFFFF
##2531AF	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB3

Deuteranopia (green-blind)

#003DAD

Tritanopia (blue-blind)

#00556D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2531af;
/* rgb */ color: rgb(37, 49, 175);
/* oklch */ color: oklch(40.1% 0.196 269.8);

Tailwind

colors: {
  custom: {
    50: '#786ac8',
    500: '#2531af',
    950: '#000000',
  },
}

SCSS

$custom: #2531af;
$custom-light: #786ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#2531af",
  "rgb": {
    "r": 37,
    "g": 49,
    "b": 175
  },
  "hsl": {
    "h": 234.783,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.40124,
    "c": 0.19605,
    "h": 269.8
  },
  "luminance": 0.05685
}

Semantic roles & 50–950 ramp

primary

#2531AF

secondary

#C7BF69

accent

#D940E8

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2531AF

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

Preview Lab → · Contrast checker → · Palette generator →