#253CA8#253CA8

#253CA8 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.175 H 268.1°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#253CA8
RGB	rgb(37, 60, 168)
HSL	hsl(229, 64%, 40%)
HSV	hsv(229, 78%, 66%)
CMYK	cmyk(78%, 64.3%, 0%, 34.1%)
CIE-LAB	lab(30.52, 31.06, -60.33)
CIE-LCH	lch(30.52, 67.86, 297.24°)
OKLab	oklab(41.32% -0.0057 -0.1745)
OKLCH	oklch(41.32% 0.175 268.1)
XYZ	xyz(9.4442, 6.4511, 37.7856)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253CA8 #A89125

analogous

#257DA8 #253CA8 #5025A8

triadic

#253CA8 #A8253C #3CA825

tetradic

#253CA8 #A8257D #A89125 #25A850

square

#253CA8 #A8257D #A89125 #25A850

split-complementary

#253CA8 #A85025 #7DA825

monochromatic

#0F1844 #1A2A76 #253CA8 #3753D3 #697EDE

Accessibility & contrast

On white

9.17

#253CA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#253CA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253CA8

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253CA8	#FFFFFF	#000000	##FFFFFF
##253CA8	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAB

Deuteranopia (green-blind)

#0042A6

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #253ca8;
/* rgb */ color: rgb(37, 60, 168);
/* oklch */ color: oklch(41.3% 0.175 268.1);

Tailwind

colors: {
  custom: {
    50: '#7571c3',
    500: '#253ca8',
    950: '#000000',
  },
}

SCSS

$custom: #253ca8;
$custom-light: #7571c3;
$custom-dark: #000000;

JSON

{
  "hex": "#253ca8",
  "rgb": {
    "r": 37,
    "g": 60,
    "b": 168
  },
  "hsl": {
    "h": 229.466,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41319,
    "c": 0.17462,
    "h": 268.1
  },
  "luminance": 0.06452
}

Semantic roles & 50–950 ramp

primary

#253CA8

secondary

#C4B365

accent

#CA41E7

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #253CA8

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

Preview Lab → · Contrast checker → · Palette generator →