#253D8B#253D8B

#253D8B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.0% C 0.133 H 267.0°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#253D8B
RGB	rgb(37, 61, 139)
HSL	hsl(226, 58%, 35%)
HSV	hsv(226, 73%, 55%)
CMYK	cmyk(73.4%, 56.1%, 0%, 45.5%)
CIE-LAB	lab(28.36, 19.25, -46.19)
CIE-LCH	lch(28.36, 50.04, 292.63°)
OKLab	oklab(38.96% -0.0069 -0.133)
OKLCH	oklch(38.96% 0.133 267)
XYZ	xyz(7.0903, 5.5941, 25.1272)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253D8B #8B7325

analogous

#25708B #253D8B #40258B

triadic

#253D8B #8B253D #3D8B25

tetradic

#253D8B #8B2570 #8B7325 #258B40

square

#253D8B #8B2570 #8B7325 #258B40

split-complementary

#253D8B #8B4025 #708B25

monochromatic

#0B132A #18285B #253D8B #3252BB #5875D3

Accessibility & contrast

On white

9.91

#253D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#253D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253D8B

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253D8B	#FFFFFF	#000000	##FFFFFF
##253D8B	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00488E

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #253d8b;
/* rgb */ color: rgb(37, 61, 139);
/* oklch */ color: oklch(39.0% 0.133 267.0);

Tailwind

colors: {
  custom: {
    50: '#6e72ad',
    500: '#253d8b',
    950: '#000000',
  },
}

SCSS

$custom: #253d8b;
$custom-light: #6e72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#253d8b",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 139
  },
  "hsl": {
    "h": 225.882,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.38956,
    "c": 0.13317,
    "h": 267
  },
  "luminance": 0.05595
}

Semantic roles & 50–950 ramp

primary

#253D8B

secondary

#B7A055

accent

#BD47E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #253D8B

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

Preview Lab → · Contrast checker → · Palette generator →