#253B8B#253B8B

#253B8B is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.136 H 267.8°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#253B8B
RGB	rgb(37, 59, 139)
HSL	hsl(227, 58%, 35%)
HSV	hsv(227, 73%, 55%)
CMYK	cmyk(73.4%, 57.6%, 0%, 45.5%)
CIE-LAB	lab(27.80, 20.63, -47.10)
CIE-LCH	lch(27.80, 51.42, 293.66°)
OKLab	oklab(38.53% -0.0052 -0.1357)
OKLCH	oklch(38.53% 0.136 267.8)
XYZ	xyz(6.9855, 5.3846, 25.0923)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B8B #8B7525

analogous

#256E8B #253B8B #42258B

triadic

#253B8B #8B253B #3B8B25

tetradic

#253B8B #8B256E #8B7525 #258B42

square

#253B8B #8B256E #8B7525 #258B42

split-complementary

#253B8B #8B4225 #6E8B25

monochromatic

#0B122A #18265B #253B8B #3250BB #5872D3

Accessibility & contrast

On white

10.11

#253B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#253B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B8B

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B8B	#FFFFFF	#000000	##FFFFFF
##253B8B	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468E

Deuteranopia (green-blind)

#003D89

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #253b8b;
/* rgb */ color: rgb(37, 59, 139);
/* oklch */ color: oklch(38.5% 0.136 267.8);

Tailwind

colors: {
  custom: {
    50: '#6e70ae',
    500: '#253b8b',
    950: '#000000',
  },
}

SCSS

$custom: #253b8b;
$custom-light: #6e70ae;
$custom-dark: #000000;

JSON

{
  "hex": "#253b8b",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 139
  },
  "hsl": {
    "h": 227.059,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.38534,
    "c": 0.13579,
    "h": 267.8
  },
  "luminance": 0.05385
}

Semantic roles & 50–950 ramp

primary

#253B8B

secondary

#B7A255

accent

#C047E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #253B8B

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

Preview Lab → · Contrast checker → · Palette generator →