#253EB1#253EB1

#253EB1 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.184 H 267.8°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#253EB1
RGB	rgb(37, 62, 177)
HSL	hsl(229, 65%, 42%)
HSV	hsv(229, 79%, 69%)
CMYK	cmyk(79.1%, 65%, 0%, 30.6%)
CIE-LAB	lab(31.83, 33.11, -63.57)
CIE-LCH	lch(31.83, 71.67, 297.52°)
OKLab	oklab(42.53% -0.0072 -0.184)
OKLCH	oklch(42.53% 0.184 267.8)
XYZ	xyz(10.4186, 7.0117, 42.3907)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253EB1 #B19825

analogous

#2584B1 #253EB1 #5225B1

triadic

#253EB1 #B1253E #3EB125

tetradic

#253EB1 #B12584 #B19825 #25B152

square

#253EB1 #B12584 #B19825 #25B152

split-complementary

#253EB1 #B15225 #84B125

monochromatic

#101B4C #1A2C7E #253EB1 #3D58D6 #6F84E1

Accessibility & contrast

On white

8.74

#253EB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#253EB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253EB1

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253EB1	#FFFFFF	#000000	##FFFFFF
##253EB1	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0044AF

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #253eb1;
/* rgb */ color: rgb(37, 62, 177);
/* oklch */ color: oklch(42.5% 0.184 267.8);

Tailwind

colors: {
  custom: {
    50: '#7773c9',
    500: '#253eb1',
    950: '#000000',
  },
}

SCSS

$custom: #253eb1;
$custom-light: #7773c9;
$custom-dark: #000000;

JSON

{
  "hex": "#253eb1",
  "rgb": {
    "r": 37,
    "g": 62,
    "b": 177
  },
  "hsl": {
    "h": 229.286,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42532,
    "c": 0.18411,
    "h": 267.8
  },
  "luminance": 0.07013
}

Semantic roles & 50–950 ramp

primary

#253EB1

secondary

#C8B76A

accent

#CA3FE8

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253EB1

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

Preview Lab → · Contrast checker → · Palette generator →