#253C81#253C81

#253C81 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.9% C 0.120 H 266.7°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#253C81
RGB	rgb(37, 60, 129)
HSL	hsl(225, 55%, 33%)
HSV	hsv(225, 71%, 51%)
CMYK	cmyk(71.3%, 53.5%, 0%, 49.4%)
CIE-LAB	lab(27.32, 16.04, -41.65)
CIE-LCH	lch(27.32, 44.63, 291.06°)
OKLab	oklab(37.93% -0.0068 -0.1197)
OKLCH	oklch(37.93% 0.12 266.7)
XYZ	xyz(6.3399, 5.2094, 21.4360)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253C81 #816A25

analogous

#256A81 #253C81 #3C2581

triadic

#253C81 #81253C #3C8125

tetradic

#253C81 #81256A #816A25 #25813C

square

#253C81 #81256A #816A25 #25813C

split-complementary

#253C81 #813C25 #6A8125

monochromatic

#0A1022 #172651 #253C81 #3352B1 #5371CE

Accessibility & contrast

On white

10.28

#253C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#253C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253C81

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253C81	#FFFFFF	#000000	##FFFFFF
##253C81	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114583

Deuteranopia (green-blind)

#003D80

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #253c81;
/* rgb */ color: rgb(37, 60, 129);
/* oklch */ color: oklch(37.9% 0.120 266.7);

Tailwind

colors: {
  custom: {
    50: '#6c71a6',
    500: '#253c81',
    950: '#000000',
  },
}

SCSS

$custom: #253c81;
$custom-light: #6c71a6;
$custom-dark: #000000;

JSON

{
  "hex": "#253c81",
  "rgb": {
    "r": 37,
    "g": 60,
    "b": 129
  },
  "hsl": {
    "h": 225,
    "s": 55.422,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37929,
    "c": 0.11986,
    "h": 266.7
  },
  "luminance": 0.0521
}

Semantic roles & 50–950 ramp

primary

#253C81

secondary

#B29950

accent

#B949DF

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #253C81

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

Preview Lab → · Contrast checker → · Palette generator →