#253DB0#253DB0

#253DB0 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.184 H 267.9°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#253DB0
RGB	rgb(37, 61, 176)
HSL	hsl(230, 65%, 42%)
HSV	hsv(230, 79%, 69%)
CMYK	cmyk(79%, 65.3%, 0%, 31%)
CIE-LAB	lab(31.50, 33.39, -63.53)
CIE-LCH	lch(31.50, 71.77, 297.73°)
OKLab	oklab(42.26% -0.0066 -0.1839)
OKLCH	oklch(42.26% 0.184 267.9)
XYZ	xyz(10.2654, 6.8642, 41.8498)
Luminance	0.0687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253DB0 #B09825

analogous

#2583B0 #253DB0 #5225B0

triadic

#253DB0 #B0253D #3DB025

tetradic

#253DB0 #B02583 #B09825 #25B052

square

#253DB0 #B02583 #B09825 #25B052

split-complementary

#253DB0 #B05225 #83B025

monochromatic

#101A4B #1A2B7D #253DB0 #3C57D6 #6F82E1

Accessibility & contrast

On white

8.85

#253DB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#253DB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253DB0

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253DB0	#FFFFFF	#000000	##FFFFFF
##253DB0	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0044AE

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #253db0;
/* rgb */ color: rgb(37, 61, 176);
/* oklch */ color: oklch(42.3% 0.184 267.9);

Tailwind

colors: {
  custom: {
    50: '#7772c9',
    500: '#253db0',
    950: '#000000',
  },
}

SCSS

$custom: #253db0;
$custom-light: #7772c9;
$custom-dark: #000000;

JSON

{
  "hex": "#253db0",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 176
  },
  "hsl": {
    "h": 229.64,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42256,
    "c": 0.18398,
    "h": 267.9
  },
  "luminance": 0.06865
}

Semantic roles & 50–950 ramp

primary

#253DB0

secondary

#C7B76A

accent

#CB40E8

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253DB0

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

Preview Lab → · Contrast checker → · Palette generator →