#253B78#253B78

#253B78 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.108 H 266.3°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#253B78
RGB	rgb(37, 59, 120)
HSL	hsl(224, 53%, 31%)
HSV	hsv(224, 69%, 47%)
CMYK	cmyk(69.2%, 50.8%, 0%, 52.9%)
CIE-LAB	lab(26.38, 13.22, -37.51)
CIE-LCH	lch(26.38, 39.77, 289.41°)
OKLab	oklab(37.01% -0.0069 -0.1075)
OKLCH	oklch(37.01% 0.108 266.3)
XYZ	xyz(5.7159, 4.8768, 18.4057)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B78 #786225

analogous

#256478 #253B78 #382578

triadic

#253B78 #78253B #3B7825

tetradic

#253B78 #782564 #786225 #257838

square

#253B78 #782564 #786225 #257838

split-complementary

#253B78 #783825 #647825

monochromatic

#080D1A #172449 #253B78 #3352A7 #4F6FC9

Accessibility & contrast

On white

10.63

#253B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#253B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B78

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B78	#FFFFFF	#000000	##FFFFFF
##253B78	1.00	10.63	1.98	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A427A

Deuteranopia (green-blind)

#053B77

Tritanopia (blue-blind)

#004953

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #253b78;
/* rgb */ color: rgb(37, 59, 120);
/* oklch */ color: oklch(37.0% 0.108 266.3);

Tailwind

colors: {
  custom: {
    50: '#6a709f',
    500: '#253b78',
    950: '#000000',
  },
}

SCSS

$custom: #253b78;
$custom-light: #6a709f;
$custom-dark: #000000;

JSON

{
  "hex": "#253b78",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 120
  },
  "hsl": {
    "h": 224.096,
    "s": 52.866,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37006,
    "c": 0.10773,
    "h": 266.3
  },
  "luminance": 0.04877
}

Semantic roles & 50–950 ramp

primary

#253B78

secondary

#AA924E

accent

#B64CDC

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #253B78

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

Preview Lab → · Contrast checker → · Palette generator →