#253D8F#253D8F

#253D8F is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.139 H 267.3°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#253D8F
RGB	rgb(37, 61, 143)
HSL	hsl(226, 59%, 35%)
HSV	hsv(226, 74%, 56%)
CMYK	cmyk(74.1%, 57.3%, 0%, 43.9%)
CIE-LAB	lab(28.68, 20.81, -48.15)
CIE-LCH	lch(28.68, 52.45, 293.38°)
OKLab	oklab(39.29% -0.0066 -0.1388)
OKLCH	oklch(39.29% 0.139 267.3)
XYZ	xyz(7.3879, 5.7132, 26.6947)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253D8F #8F7725

analogous

#25728F #253D8F #42258F

triadic

#253D8F #8F253D #3D8F25

tetradic

#253D8F #8F2572 #8F7725 #258F42

square

#253D8F #8F2572 #8F7725 #258F42

split-complementary

#253D8F #8F4225 #728F25

monochromatic

#0C142E #18285E #253D8F #3252C0 #5A76D4

Accessibility & contrast

On white

9.80

#253D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#253D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253D8F

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253D8F	#FFFFFF	#000000	##FFFFFF
##253D8F	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004992

Deuteranopia (green-blind)

#003F8D

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #253d8f;
/* rgb */ color: rgb(37, 61, 143);
/* oklch */ color: oklch(39.3% 0.139 267.3);

Tailwind

colors: {
  custom: {
    50: '#6f72b0',
    500: '#253d8f',
    950: '#000000',
  },
}

SCSS

$custom: #253d8f;
$custom-light: #6f72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#253d8f",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 143
  },
  "hsl": {
    "h": 226.415,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.3929,
    "c": 0.13891,
    "h": 267.3
  },
  "luminance": 0.05714
}

Semantic roles & 50–950 ramp

primary

#253D8F

secondary

#B9A357

accent

#BF46E2

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #253D8F

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

Preview Lab → · Contrast checker → · Palette generator →