#253B8D#253B8D

#253B8D is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.139 H 267.9°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#253B8D
RGB	rgb(37, 59, 141)
HSL	hsl(227, 58%, 35%)
HSV	hsv(227, 74%, 55%)
CMYK	cmyk(73.8%, 58.2%, 0%, 44.7%)
CIE-LAB	lab(27.96, 21.41, -48.07)
CIE-LCH	lch(27.96, 52.62, 294.00°)
OKLab	oklab(38.7% -0.0051 -0.1386)
OKLCH	oklch(38.7% 0.139 267.9)
XYZ	xyz(7.1330, 5.4436, 25.8689)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B8D #8D7725

analogous

#256F8D #253B8D #43258D

triadic

#253B8D #8D253B #3B8D25

tetradic

#253B8D #8D256F #8D7725 #258D43

square

#253B8D #8D256F #8D7725 #258D43

split-complementary

#253B8D #8D4325 #6F8D25

monochromatic

#0C122C #18275D #253B8D #324FBD #5973D3

Accessibility & contrast

On white

10.05

#253B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#253B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B8D

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B8D	#FFFFFF	#000000	##FFFFFF
##253B8D	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#003D8B

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #253b8d;
/* rgb */ color: rgb(37, 59, 141);
/* oklch */ color: oklch(38.7% 0.139 267.9);

Tailwind

colors: {
  custom: {
    50: '#6f70af',
    500: '#253b8d',
    950: '#000000',
  },
}

SCSS

$custom: #253b8d;
$custom-light: #6f70af;
$custom-dark: #000000;

JSON

{
  "hex": "#253b8d",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 141
  },
  "hsl": {
    "h": 227.308,
    "s": 58.427,
    "l": 34.902
  },
  "oklch": {
    "l": 0.38704,
    "c": 0.13866,
    "h": 267.9
  },
  "luminance": 0.05444
}

Semantic roles & 50–950 ramp

primary

#253B8D

secondary

#B8A356

accent

#C146E2

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #253B8D

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

Preview Lab → · Contrast checker → · Palette generator →