#253AB0#253AB0

#253AB0 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.187 H 268.5°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#253AB0
RGB	rgb(37, 58, 176)
HSL	hsl(231, 65%, 42%)
HSV	hsv(231, 79%, 69%)
CMYK	cmyk(79%, 67%, 0%, 31%)
CIE-LAB	lab(30.77, 35.32, -64.72)
CIE-LCH	lch(30.77, 73.73, 298.62°)
OKLab	oklab(41.72% -0.005 -0.1874)
OKLCH	oklch(41.72% 0.187 268.5)
XYZ	xyz(10.1098, 6.5529, 41.7979)
Luminance	0.0655 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253AB0 #B09B25

analogous

#2580B0 #253AB0 #5625B0

triadic

#253AB0 #B0253A #3AB025

tetradic

#253AB0 #B02580 #B09B25 #25B056

square

#253AB0 #B02580 #B09B25 #25B056

split-complementary

#253AB0 #B05625 #80B025

monochromatic

#10194B #1A297D #253AB0 #3C53D6 #6F80E1

Accessibility & contrast

On white

9.09

#253AB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#253AB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253AB0

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253AB0	#FFFFFF	#000000	##FFFFFF
##253AB0	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB4

Deuteranopia (green-blind)

#0042AE

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #253ab0;
/* rgb */ color: rgb(37, 58, 176);
/* oklch */ color: oklch(41.7% 0.187 268.5);

Tailwind

colors: {
  custom: {
    50: '#7770c9',
    500: '#253ab0',
    950: '#000000',
  },
}

SCSS

$custom: #253ab0;
$custom-light: #7770c9;
$custom-dark: #000000;

JSON

{
  "hex": "#253ab0",
  "rgb": {
    "r": 37,
    "g": 58,
    "b": 176
  },
  "hsl": {
    "h": 230.935,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41722,
    "c": 0.18745,
    "h": 268.5
  },
  "luminance": 0.06554
}

Semantic roles & 50–950 ramp

primary

#253AB0

secondary

#C7B96A

accent

#CF40E8

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #253AB0

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

Preview Lab → · Contrast checker → · Palette generator →