#253B8A#253B8A

#253B8A is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.134 H 267.8°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#253B8A
RGB	rgb(37, 59, 138)
HSL	hsl(227, 58%, 34%)
HSV	hsv(227, 73%, 54%)
CMYK	cmyk(73.2%, 57.2%, 0%, 45.9%)
CIE-LAB	lab(27.72, 20.24, -46.60)
CIE-LCH	lch(27.72, 50.81, 293.48°)
OKLab	oklab(38.45% -0.0052 -0.1342)
OKLCH	oklch(38.45% 0.134 267.8)
XYZ	xyz(6.9128, 5.3555, 24.7092)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B8A #8A7425

analogous

#256E8A #253B8A #42258A

triadic

#253B8A #8A253B #3B8A25

tetradic

#253B8A #8A256E #8A7425 #258A42

square

#253B8A #8A256E #8A7425 #258A42

split-complementary

#253B8A #8A4225 #6E8A25

monochromatic

#0B1229 #18265A #253B8A #3250BA #5772D2

Accessibility & contrast

On white

10.14

#253B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#253B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B8A

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B8A	#FFFFFF	#000000	##FFFFFF
##253B8A	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468D

Deuteranopia (green-blind)

#003D88

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #253b8a;
/* rgb */ color: rgb(37, 59, 138);
/* oklch */ color: oklch(38.5% 0.134 267.8);

Tailwind

colors: {
  custom: {
    50: '#6e70ad',
    500: '#253b8a',
    950: '#000000',
  },
}

SCSS

$custom: #253b8a;
$custom-light: #6e70ad;
$custom-dark: #000000;

JSON

{
  "hex": "#253b8a",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 138
  },
  "hsl": {
    "h": 226.931,
    "s": 57.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.3845,
    "c": 0.13435,
    "h": 267.8
  },
  "luminance": 0.05356
}

Semantic roles & 50–950 ramp

primary

#253B8A

secondary

#B7A154

accent

#BF47E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #253B8A

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

Preview Lab → · Contrast checker → · Palette generator →