#253B73#253B73

#253B73 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.6% C 0.100 H 265.6°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#253B73
RGB	rgb(37, 59, 115)
HSL	hsl(223, 51%, 30%)
HSV	hsv(223, 68%, 45%)
CMYK	cmyk(67.8%, 48.7%, 0%, 54.9%)
CIE-LAB	lab(26.04, 11.27, -34.90)
CIE-LCH	lch(26.04, 36.67, 287.90°)
OKLab	oklab(36.63% -0.0077 -0.0998)
OKLCH	oklch(36.63% 0.1 265.6)
XYZ	xyz(5.4204, 4.7585, 16.8492)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B73 #735D25

analogous

#256273 #253B73 #362573

triadic

#253B73 #73253B #3B7325

tetradic

#253B73 #732562 #735D25 #257336

square

#253B73 #732562 #735D25 #257336

split-complementary

#253B73 #733625 #627325

monochromatic

#070C17 #162345 #253B73 #3453A1 #4D6FC6

Accessibility & contrast

On white

10.76

#253B73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#253B73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B73

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B73	#FFFFFF	#000000	##FFFFFF
##253B73	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4175

Deuteranopia (green-blind)

#103A72

Tritanopia (blue-blind)

#004851

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #253b73;
/* rgb */ color: rgb(37, 59, 115);
/* oklch */ color: oklch(36.6% 0.100 265.6);

Tailwind

colors: {
  custom: {
    50: '#69709c',
    500: '#253b73',
    950: '#000000',
  },
}

SCSS

$custom: #253b73;
$custom-light: #69709c;
$custom-dark: #000000;

JSON

{
  "hex": "#253b73",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 115
  },
  "hsl": {
    "h": 223.077,
    "s": 51.316,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36631,
    "c": 0.10012,
    "h": 265.6
  },
  "luminance": 0.04759
}

Semantic roles & 50–950 ramp

primary

#253B73

secondary

#A68D4E

accent

#B34DDB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #253B73

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

Preview Lab → · Contrast checker → · Palette generator →