#253F8A#253F8A

#253F8A is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.3% C 0.129 H 266.1°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#253F8A
RGB	rgb(37, 63, 138)
HSL	hsl(225, 58%, 34%)
HSV	hsv(225, 73%, 54%)
CMYK	cmyk(73.2%, 54.3%, 0%, 45.9%)
CIE-LAB	lab(28.86, 17.49, -44.77)
CIE-LCH	lch(28.86, 48.06, 291.34°)
OKLab	oklab(39.3% -0.0087 -0.1288)
OKLCH	oklch(39.3% 0.129 266.1)
XYZ	xyz(7.1263, 5.7826, 24.7804)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F8A #8A7025

analogous

#25728A #253F8A #3D258A

triadic

#253F8A #8A253F #3F8A25

tetradic

#253F8A #8A2572 #8A7025 #258A3D

square

#253F8A #8A2572 #8A7025 #258A3D

split-complementary

#253F8A #8A3D25 #728A25

monochromatic

#0B1329 #18295A #253F8A #3255BA #5777D2

Accessibility & contrast

On white

9.74

#253F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#253F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F8A

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F8A	#FFFFFF	#000000	##FFFFFF
##253F8A	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A498D

Deuteranopia (green-blind)

#004088

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #253f8a;
/* rgb */ color: rgb(37, 63, 138);
/* oklch */ color: oklch(39.3% 0.129 266.1);

Tailwind

colors: {
  custom: {
    50: '#6e73ad',
    500: '#253f8a',
    950: '#000000',
  },
}

SCSS

$custom: #253f8a;
$custom-light: #6e73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#253f8a",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 138
  },
  "hsl": {
    "h": 224.554,
    "s": 57.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.39304,
    "c": 0.12908,
    "h": 266.1
  },
  "luminance": 0.05783
}

Semantic roles & 50–950 ramp

primary

#253F8A

secondary

#B79D54

accent

#B947E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #253F8A

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

Preview Lab → · Contrast checker → · Palette generator →