#253C8F#253C8F

#253C8F is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.140 H 267.6°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#253C8F
RGB	rgb(37, 60, 143)
HSL	hsl(227, 59%, 35%)
HSV	hsv(227, 74%, 56%)
CMYK	cmyk(74.1%, 58%, 0%, 43.9%)
CIE-LAB	lab(28.40, 21.50, -48.60)
CIE-LCH	lch(28.40, 53.14, 293.86°)
OKLab	oklab(39.08% -0.0058 -0.1401)
OKLCH	oklch(39.08% 0.14 267.6)
XYZ	xyz(7.3350, 5.6074, 26.6770)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253C8F #8F7825

analogous

#25718F #253C8F #43258F

triadic

#253C8F #8F253C #3C8F25

tetradic

#253C8F #8F2571 #8F7825 #258F43

square

#253C8F #8F2571 #8F7825 #258F43

split-complementary

#253C8F #8F4325 #718F25

monochromatic

#0C132E #18285E #253C8F #3250C0 #5A75D4

Accessibility & contrast

On white

9.90

#253C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#253C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253C8F

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253C8F	#FFFFFF	#000000	##FFFFFF
##253C8F	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004892

Deuteranopia (green-blind)

#003E8D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #253c8f;
/* rgb */ color: rgb(37, 60, 143);
/* oklch */ color: oklch(39.1% 0.140 267.6);

Tailwind

colors: {
  custom: {
    50: '#6f71b0',
    500: '#253c8f',
    950: '#000000',
  },
}

SCSS

$custom: #253c8f;
$custom-light: #6f71b0;
$custom-dark: #000000;

JSON

{
  "hex": "#253c8f",
  "rgb": {
    "r": 37,
    "g": 60,
    "b": 143
  },
  "hsl": {
    "h": 226.981,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.39081,
    "c": 0.14021,
    "h": 267.6
  },
  "luminance": 0.05608
}

Semantic roles & 50–950 ramp

primary

#253C8F

secondary

#B9A457

accent

#C046E2

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #253C8F

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

Preview Lab → · Contrast checker → · Palette generator →