#253EA8#253EA8

#253EA8 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.172 H 267.7°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#253EA8
RGB	rgb(37, 62, 168)
HSL	hsl(229, 64%, 40%)
HSV	hsv(229, 78%, 66%)
CMYK	cmyk(78%, 63.1%, 0%, 34.1%)
CIE-LAB	lab(31.03, 29.74, -59.50)
CIE-LCH	lch(31.03, 66.52, 296.55°)
OKLab	oklab(41.69% -0.0069 -0.1721)
OKLCH	oklch(41.69% 0.172 267.7)
XYZ	xyz(9.5510, 6.6646, 37.8212)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253EA8 #A88F25

analogous

#257FA8 #253EA8 #4E25A8

triadic

#253EA8 #A8253E #3EA825

tetradic

#253EA8 #A8257F #A88F25 #25A84E

square

#253EA8 #A8257F #A88F25 #25A84E

split-complementary

#253EA8 #A84E25 #7FA825

monochromatic

#0F1944 #1A2B76 #253EA8 #3755D3 #6980DE

Accessibility & contrast

On white

9.00

#253EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#253EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253EA8

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253EA8	#FFFFFF	#000000	##FFFFFF
##253EA8	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAB

Deuteranopia (green-blind)

#0043A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #253ea8;
/* rgb */ color: rgb(37, 62, 168);
/* oklch */ color: oklch(41.7% 0.172 267.7);

Tailwind

colors: {
  custom: {
    50: '#7573c3',
    500: '#253ea8',
    950: '#000000',
  },
}

SCSS

$custom: #253ea8;
$custom-light: #7573c3;
$custom-dark: #000000;

JSON

{
  "hex": "#253ea8",
  "rgb": {
    "r": 37,
    "g": 62,
    "b": 168
  },
  "hsl": {
    "h": 228.55,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41694,
    "c": 0.17222,
    "h": 267.7
  },
  "luminance": 0.06666
}

Semantic roles & 50–950 ramp

primary

#253EA8

secondary

#C4B265

accent

#C741E7

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253EA8

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

Preview Lab → · Contrast checker → · Palette generator →