#253FB0#253FB0

#253FB0 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.6% C 0.182 H 267.6°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#253FB0
RGB	rgb(37, 63, 176)
HSL	hsl(229, 65%, 42%)
HSV	hsv(229, 79%, 69%)
CMYK	cmyk(79%, 64.2%, 0%, 31%)
CIE-LAB	lab(31.99, 32.09, -62.71)
CIE-LCH	lch(31.99, 70.44, 297.10°)
OKLab	oklab(42.62% -0.0077 -0.1815)
OKLCH	oklch(42.62% 0.182 267.6)
XYZ	xyz(10.3742, 7.0817, 41.8860)
Luminance	0.0708 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253FB0 #B09625

analogous

#2585B0 #253FB0 #5125B0

triadic

#253FB0 #B0253F #3FB025

tetradic

#253FB0 #B02585 #B09625 #25B051

square

#253FB0 #B02585 #B09625 #25B051

split-complementary

#253FB0 #B05125 #85B025

monochromatic

#101B4B #1A2D7D #253FB0 #3C59D6 #6F84E1

Accessibility & contrast

On white

8.69

#253FB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#253FB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253FB0

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253FB0	#FFFFFF	#000000	##FFFFFF
##253FB0	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B4

Deuteranopia (green-blind)

#0045AE

Tritanopia (blue-blind)

#005D71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #253fb0;
/* rgb */ color: rgb(37, 63, 176);
/* oklch */ color: oklch(42.6% 0.182 267.6);

Tailwind

colors: {
  custom: {
    50: '#7774c9',
    500: '#253fb0',
    950: '#000000',
  },
}

SCSS

$custom: #253fb0;
$custom-light: #7774c9;
$custom-dark: #000000;

JSON

{
  "hex": "#253fb0",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 176
  },
  "hsl": {
    "h": 228.777,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42621,
    "c": 0.18162,
    "h": 267.6
  },
  "luminance": 0.07083
}

Semantic roles & 50–950 ramp

primary

#253FB0

secondary

#C7B66A

accent

#C940E8

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253FB0

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

Preview Lab → · Contrast checker → · Palette generator →