#253B8E#253B8E

#253B8E is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.140 H 267.9°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#253B8E
RGB	rgb(37, 59, 142)
HSL	hsl(227, 59%, 35%)
HSV	hsv(227, 74%, 56%)
CMYK	cmyk(73.9%, 58.5%, 0%, 44.3%)
CIE-LAB	lab(28.04, 21.79, -48.56)
CIE-LCH	lch(28.04, 53.23, 294.17°)
OKLab	oklab(38.79% -0.005 -0.14)
OKLCH	oklch(38.79% 0.14 267.9)
XYZ	xyz(7.2077, 5.4735, 26.2626)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B8E #8E7825

analogous

#256F8E #253B8E #44258E

triadic

#253B8E #8E253B #3B8E25

tetradic

#253B8E #8E256F #8E7825 #258E44

square

#253B8E #8E256F #8E7825 #258E44

split-complementary

#253B8E #8E4425 #6F8E25

monochromatic

#0C132D #18275D #253B8E #324FBF #5A73D4

Accessibility & contrast

On white

10.02

#253B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#253B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B8E

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B8E	#FFFFFF	#000000	##FFFFFF
##253B8E	1.00	10.02	2.09	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #253b8e;
/* rgb */ color: rgb(37, 59, 142);
/* oklch */ color: oklch(38.8% 0.140 267.9);

Tailwind

colors: {
  custom: {
    50: '#6f70b0',
    500: '#253b8e',
    950: '#000000',
  },
}

SCSS

$custom: #253b8e;
$custom-light: #6f70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#253b8e",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 142
  },
  "hsl": {
    "h": 227.429,
    "s": 58.659,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38789,
    "c": 0.14009,
    "h": 267.9
  },
  "luminance": 0.05474
}

Semantic roles & 50–950 ramp

primary

#253B8E

secondary

#B9A456

accent

#C146E2

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #253B8E

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

Preview Lab → · Contrast checker → · Palette generator →