#253A8A#253A8A

#253A8A is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.136 H 268.2°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#253A8A
RGB	rgb(37, 58, 138)
HSL	hsl(228, 58%, 34%)
HSV	hsv(228, 73%, 54%)
CMYK	cmyk(73.2%, 58%, 0%, 45.9%)
CIE-LAB	lab(27.45, 20.93, -47.06)
CIE-LCH	lch(27.45, 51.50, 293.98°)
OKLab	oklab(38.24% -0.0044 -0.1356)
OKLCH	oklch(38.24% 0.136 268.2)
XYZ	xyz(6.8619, 5.2537, 24.6923)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253A8A #8A7525

analogous

#256D8A #253A8A #43258A

triadic

#253A8A #8A253A #3A8A25

tetradic

#253A8A #8A256D #8A7525 #258A43

square

#253A8A #8A256D #8A7525 #258A43

split-complementary

#253A8A #8A4325 #6D8A25

monochromatic

#0B1129 #18265A #253A8A #324EBA #5771D2

Accessibility & contrast

On white

10.24

#253A8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#253A8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253A8A

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253A8A	#FFFFFF	#000000	##FFFFFF
##253A8A	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468D

Deuteranopia (green-blind)

#003C88

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #253a8a;
/* rgb */ color: rgb(37, 58, 138);
/* oklch */ color: oklch(38.2% 0.136 268.2);

Tailwind

colors: {
  custom: {
    50: '#6e6fad',
    500: '#253a8a',
    950: '#000000',
  },
}

SCSS

$custom: #253a8a;
$custom-light: #6e6fad;
$custom-dark: #000000;

JSON

{
  "hex": "#253a8a",
  "rgb": {
    "r": 37,
    "g": 58,
    "b": 138
  },
  "hsl": {
    "h": 227.525,
    "s": 57.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.3824,
    "c": 0.13567,
    "h": 268.2
  },
  "luminance": 0.05254
}

Semantic roles & 50–950 ramp

primary

#253A8A

secondary

#B7A254

accent

#C147E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #253A8A

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

Preview Lab → · Contrast checker → · Palette generator →