#253D81#253D81

#253D81 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.1% C 0.119 H 266.2°. Best body text is #FFFFFF at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#253D81
RGB	rgb(37, 61, 129)
HSL	hsl(224, 55%, 33%)
HSV	hsv(224, 71%, 51%)
CMYK	cmyk(71.3%, 52.7%, 0%, 49.4%)
CIE-LAB	lab(27.61, 15.35, -41.18)
CIE-LCH	lch(27.61, 43.95, 290.44°)
OKLab	oklab(38.15% -0.0078 -0.1183)
OKLCH	oklch(38.15% 0.119 266.2)
XYZ	xyz(6.3928, 5.3151, 21.4536)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253D81 #816925

analogous

#256B81 #253D81 #3B2581

triadic

#253D81 #81253D #3D8125

tetradic

#253D81 #81256B #816925 #25813B

square

#253D81 #81256B #816925 #25813B

split-complementary

#253D81 #813B25 #6B8125

monochromatic

#0A1022 #172751 #253D81 #3353B1 #5373CE

Accessibility & contrast

On white

10.18

#253D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#253D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253D81

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253D81	#FFFFFF	#000000	##FFFFFF
##253D81	1.00	10.18	2.06	10.18
#FFFFFF	10.18	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144683

Deuteranopia (green-blind)

#003D80

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #253d81;
/* rgb */ color: rgb(37, 61, 129);
/* oklch */ color: oklch(38.1% 0.119 266.2);

Tailwind

colors: {
  custom: {
    50: '#6c72a6',
    500: '#253d81',
    950: '#000000',
  },
}

SCSS

$custom: #253d81;
$custom-light: #6c72a6;
$custom-dark: #000000;

JSON

{
  "hex": "#253d81",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 129
  },
  "hsl": {
    "h": 224.348,
    "s": 55.422,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3815,
    "c": 0.11853,
    "h": 266.2
  },
  "luminance": 0.05316
}

Semantic roles & 50–950 ramp

primary

#253D81

secondary

#B29850

accent

#B849DF

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #253D81

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

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