#253EB0#253EB0

#253EB0 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.183 H 267.8°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#253EB0
RGB	rgb(37, 62, 176)
HSL	hsl(229, 65%, 42%)
HSV	hsv(229, 79%, 69%)
CMYK	cmyk(79%, 64.8%, 0%, 31%)
CIE-LAB	lab(31.74, 32.74, -63.12)
CIE-LCH	lch(31.74, 71.11, 297.42°)
OKLab	oklab(42.44% -0.0071 -0.1827)
OKLCH	oklch(42.44% 0.183 267.8)
XYZ	xyz(10.3193, 6.9720, 41.8677)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253EB0 #B09725

analogous

#2583B0 #253EB0 #5225B0

triadic

#253EB0 #B0253E #3EB025

tetradic

#253EB0 #B02583 #B09725 #25B052

square

#253EB0 #B02583 #B09725 #25B052

split-complementary

#253EB0 #B05225 #83B025

monochromatic

#101A4B #1A2C7D #253EB0 #3C58D6 #6F83E1

Accessibility & contrast

On white

8.77

#253EB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#253EB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253EB0

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253EB0	#FFFFFF	#000000	##FFFFFF
##253EB0	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0044AE

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #253eb0;
/* rgb */ color: rgb(37, 62, 176);
/* oklch */ color: oklch(42.4% 0.183 267.8);

Tailwind

colors: {
  custom: {
    50: '#7773c9',
    500: '#253eb0',
    950: '#000000',
  },
}

SCSS

$custom: #253eb0;
$custom-light: #7773c9;
$custom-dark: #000000;

JSON

{
  "hex": "#253eb0",
  "rgb": {
    "r": 37,
    "g": 62,
    "b": 176
  },
  "hsl": {
    "h": 229.209,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42438,
    "c": 0.18281,
    "h": 267.8
  },
  "luminance": 0.06973
}

Semantic roles & 50–950 ramp

primary

#253EB0

secondary

#C7B66A

accent

#CA40E8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253EB0

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

Preview Lab → · Contrast checker → · Palette generator →