#253A8B#253A8B

#253A8B is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.137 H 268.2°. Best body text is #FFFFFF at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#253A8B
RGB	rgb(37, 58, 139)
HSL	hsl(228, 58%, 35%)
HSV	hsv(228, 73%, 55%)
CMYK	cmyk(73.4%, 58.3%, 0%, 45.5%)
CIE-LAB	lab(27.53, 21.32, -47.55)
CIE-LCH	lch(27.53, 52.11, 294.15°)
OKLab	oklab(38.32% -0.0043 -0.137)
OKLCH	oklch(38.32% 0.137 268.2)
XYZ	xyz(6.9346, 5.2828, 25.0753)
Luminance	0.0528 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253A8B #8B7625

analogous

#256D8B #253A8B #43258B

triadic

#253A8B #8B253A #3A8B25

tetradic

#253A8B #8B256D #8B7625 #258B43

square

#253A8B #8B256D #8B7625 #258B43

split-complementary

#253A8B #8B4325 #6D8B25

monochromatic

#0B122A #18265B #253A8B #324EBB #5871D3

Accessibility & contrast

On white

10.21

#253A8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#253A8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253A8B

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253A8B	#FFFFFF	#000000	##FFFFFF
##253A8B	1.00	10.21	2.06	10.21
#FFFFFF	10.21	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468E

Deuteranopia (green-blind)

#003C89

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #253a8b;
/* rgb */ color: rgb(37, 58, 139);
/* oklch */ color: oklch(38.3% 0.137 268.2);

Tailwind

colors: {
  custom: {
    50: '#6e6fae',
    500: '#253a8b',
    950: '#000000',
  },
}

SCSS

$custom: #253a8b;
$custom-light: #6e6fae;
$custom-dark: #000000;

JSON

{
  "hex": "#253a8b",
  "rgb": {
    "r": 37,
    "g": 58,
    "b": 139
  },
  "hsl": {
    "h": 227.647,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.38325,
    "c": 0.13711,
    "h": 268.2
  },
  "luminance": 0.05284
}

Semantic roles & 50–950 ramp

primary

#253A8B

secondary

#B7A355

accent

#C147E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #253A8B

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

Preview Lab → · Contrast checker → · Palette generator →