#253FA8#253FA8

#253FA8 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.9% C 0.171 H 267.5°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#253FA8
RGB	rgb(37, 63, 168)
HSL	hsl(228, 64%, 40%)
HSV	hsv(228, 78%, 66%)
CMYK	cmyk(78%, 62.5%, 0%, 34.1%)
CIE-LAB	lab(31.29, 29.07, -59.08)
CIE-LCH	lch(31.29, 65.85, 296.20°)
OKLab	oklab(41.88% -0.0075 -0.1708)
OKLCH	oklch(41.88% 0.171 267.5)
XYZ	xyz(9.6059, 6.7744, 37.8395)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253FA8 #A88E25

analogous

#2580A8 #253FA8 #4D25A8

triadic

#253FA8 #A8253F #3FA825

tetradic

#253FA8 #A82580 #A88E25 #25A84D

square

#253FA8 #A82580 #A88E25 #25A84D

split-complementary

#253FA8 #A84D25 #80A825

monochromatic

#0F1944 #1A2C76 #253FA8 #3756D3 #6981DE

Accessibility & contrast

On white

8.92

#253FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#253FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253FA8

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253FA8	#FFFFFF	#000000	##FFFFFF
##253FA8	1.00	8.92	2.36	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0044A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #253fa8;
/* rgb */ color: rgb(37, 63, 168);
/* oklch */ color: oklch(41.9% 0.171 267.5);

Tailwind

colors: {
  custom: {
    50: '#7573c3',
    500: '#253fa8',
    950: '#000000',
  },
}

SCSS

$custom: #253fa8;
$custom-light: #7573c3;
$custom-dark: #000000;

JSON

{
  "hex": "#253fa8",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 168
  },
  "hsl": {
    "h": 228.092,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41884,
    "c": 0.171,
    "h": 267.5
  },
  "luminance": 0.06775
}

Semantic roles & 50–950 ramp

primary

#253FA8

secondary

#C4B165

accent

#C641E7

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253FA8

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

Preview Lab → · Contrast checker → · Palette generator →