#253D78#253D78

#253D78 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.105 H 265.1°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#253D78
RGB	rgb(37, 61, 120)
HSL	hsl(223, 53%, 31%)
HSV	hsv(223, 69%, 47%)
CMYK	cmyk(69.2%, 49.2%, 0%, 52.9%)
CIE-LAB	lab(26.98, 11.83, -36.55)
CIE-LCH	lch(26.98, 38.42, 287.93°)
OKLab	oklab(37.46% -0.009 -0.1046)
OKLCH	oklch(37.46% 0.105 265.1)
XYZ	xyz(5.8207, 5.0863, 18.4407)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253D78 #786025

analogous

#256678 #253D78 #372578

triadic

#253D78 #78253D #3D7825

tetradic

#253D78 #782566 #786025 #257837

square

#253D78 #782566 #786025 #257837

split-complementary

#253D78 #783725 #667825

monochromatic

#080D1A #172549 #253D78 #3355A7 #4F72C9

Accessibility & contrast

On white

10.41

#253D78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#253D78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253D78

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253D78	#FFFFFF	#000000	##FFFFFF
##253D78	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F447A

Deuteranopia (green-blind)

#0D3C77

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #253d78;
/* rgb */ color: rgb(37, 61, 120);
/* oklch */ color: oklch(37.5% 0.105 265.1);

Tailwind

colors: {
  custom: {
    50: '#6a729f',
    500: '#253d78',
    950: '#000000',
  },
}

SCSS

$custom: #253d78;
$custom-light: #6a729f;
$custom-dark: #000000;

JSON

{
  "hex": "#253d78",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 120
  },
  "hsl": {
    "h": 222.651,
    "s": 52.866,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37463,
    "c": 0.10503,
    "h": 265.1
  },
  "luminance": 0.05087
}

Semantic roles & 50–950 ramp

primary

#253D78

secondary

#AA904E

accent

#B24CDC

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #253D78

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

Preview Lab → · Contrast checker → · Palette generator →