#253DA6#253DA6

#253DA6 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.171 H 267.9°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#253DA6
RGB	rgb(37, 61, 166)
HSL	hsl(229, 64%, 40%)
HSV	hsv(229, 78%, 65%)
CMYK	cmyk(77.7%, 63.3%, 0%, 34.9%)
CIE-LAB	lab(30.60, 29.64, -59.01)
CIE-LCH	lch(30.60, 66.03, 296.67°)
OKLab	oklab(41.32% -0.0063 -0.1706)
OKLCH	oklch(41.32% 0.171 267.9)
XYZ	xyz(9.3122, 6.4829, 36.8295)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253DA6 #A68E25

analogous

#257EA6 #253DA6 #4D25A6

triadic

#253DA6 #A6253D #3DA625

tetradic

#253DA6 #A6257E #A68E25 #25A64D

square

#253DA6 #A6257E #A68E25 #25A64D

split-complementary

#253DA6 #A64D25 #7EA625

monochromatic

#0F1842 #1A2B74 #253DA6 #3653D2 #687EDD

Accessibility & contrast

On white

9.14

#253DA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#253DA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253DA6

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253DA6	#FFFFFF	#000000	##FFFFFF
##253DA6	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA9

Deuteranopia (green-blind)

#0042A4

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #253da6;
/* rgb */ color: rgb(37, 61, 166);
/* oklch */ color: oklch(41.3% 0.171 267.9);

Tailwind

colors: {
  custom: {
    50: '#7572c1',
    500: '#253da6',
    950: '#000000',
  },
}

SCSS

$custom: #253da6;
$custom-light: #7572c1;
$custom-dark: #000000;

JSON

{
  "hex": "#253da6",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 166
  },
  "hsl": {
    "h": 228.837,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41321,
    "c": 0.17075,
    "h": 267.9
  },
  "luminance": 0.06484
}

Semantic roles & 50–950 ramp

primary

#253DA6

secondary

#C3B164

accent

#C841E7

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #253DA6

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

Preview Lab → · Contrast checker → · Palette generator →