#253EB4#253EB4

#253EB4 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.188 H 267.8°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#253EB4
RGB	rgb(37, 62, 180)
HSL	hsl(230, 66%, 43%)
HSV	hsv(230, 79%, 71%)
CMYK	cmyk(79.4%, 65.6%, 0%, 29.4%)
CIE-LAB	lab(32.11, 34.23, -64.90)
CIE-LCH	lch(32.11, 73.37, 297.81°)
OKLab	oklab(42.82% -0.0073 -0.1879)
OKLCH	oklch(42.82% 0.188 267.8)
XYZ	xyz(10.7209, 7.1326, 43.9829)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253EB4 #B49B25

analogous

#2586B4 #253EB4 #5325B4

triadic

#253EB4 #B4253E #3EB425

tetradic

#253EB4 #B42586 #B49B25 #25B453

square

#253EB4 #B42586 #B49B25 #25B453

split-complementary

#253EB4 #B45325 #86B425

monochromatic

#101B4E #1B2D81 #253EB4 #3F59D7 #7185E2

Accessibility & contrast

On white

8.65

#253EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#253EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253EB4

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253EB4	#FFFFFF	#000000	##FFFFFF
##253EB4	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B8

Deuteranopia (green-blind)

#0045B2

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #253eb4;
/* rgb */ color: rgb(37, 62, 180);
/* oklch */ color: oklch(42.8% 0.188 267.8);

Tailwind

colors: {
  custom: {
    50: '#7873cc',
    500: '#253eb4',
    950: '#000000',
  },
}

SCSS

$custom: #253eb4;
$custom-light: #7873cc;
$custom-dark: #000000;

JSON

{
  "hex": "#253eb4",
  "rgb": {
    "r": 37,
    "g": 62,
    "b": 180
  },
  "hsl": {
    "h": 229.51,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.42817,
    "c": 0.18802,
    "h": 267.8
  },
  "luminance": 0.07134
}

Semantic roles & 50–950 ramp

primary

#253EB4

secondary

#C9B96C

accent

#CB3FE9

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #253EB4

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

Preview Lab → · Contrast checker → · Palette generator →