#253AB1#253AB1

#253AB1 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.189 H 268.5°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#253AB1
RGB	rgb(37, 58, 177)
HSL	hsl(231, 65%, 42%)
HSV	hsv(231, 79%, 69%)
CMYK	cmyk(79.1%, 67.2%, 0%, 30.6%)
CIE-LAB	lab(30.86, 35.69, -65.16)
CIE-LCH	lch(30.86, 74.30, 298.71°)
OKLab	oklab(41.82% -0.005 -0.1887)
OKLCH	oklch(41.82% 0.189 268.5)
XYZ	xyz(10.2091, 6.5926, 42.3209)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253AB1 #B19C25

analogous

#2580B1 #253AB1 #5625B1

triadic

#253AB1 #B1253A #3AB125

tetradic

#253AB1 #B12580 #B19C25 #25B156

square

#253AB1 #B12580 #B19C25 #25B156

split-complementary

#253AB1 #B15625 #80B125

monochromatic

#10194C #1A297E #253AB1 #3D54D6 #6F80E1

Accessibility & contrast

On white

9.06

#253AB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#253AB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253AB1

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253AB1	#FFFFFF	#000000	##FFFFFF
##253AB1	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB5

Deuteranopia (green-blind)

#0042AF

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #253ab1;
/* rgb */ color: rgb(37, 58, 177);
/* oklch */ color: oklch(41.8% 0.189 268.5);

Tailwind

colors: {
  custom: {
    50: '#7870c9',
    500: '#253ab1',
    950: '#000000',
  },
}

SCSS

$custom: #253ab1;
$custom-light: #7870c9;
$custom-dark: #000000;

JSON

{
  "hex": "#253ab1",
  "rgb": {
    "r": 37,
    "g": 58,
    "b": 177
  },
  "hsl": {
    "h": 231,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.4182,
    "c": 0.18874,
    "h": 268.5
  },
  "luminance": 0.06594
}

Semantic roles & 50–950 ramp

primary

#253AB1

secondary

#C8BA6A

accent

#CF3FE8

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #253AB1

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

Preview Lab → · Contrast checker → · Palette generator →