#25428B#25428B

#25428B is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.0% C 0.127 H 264.9°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#25428B
RGB	rgb(37, 66, 139)
HSL	hsl(223, 58%, 35%)
HSV	hsv(223, 73%, 55%)
CMYK	cmyk(73.4%, 52.5%, 0%, 45.5%)
CIE-LAB	lab(29.80, 15.82, -43.87)
CIE-LCH	lch(29.80, 46.63, 289.82°)
OKLab	oklab(40.04% -0.0112 -0.1261)
OKLCH	oklch(40.04% 0.127 264.9)
XYZ	xyz(7.3697, 6.1531, 25.2204)
Luminance	0.0615 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#25428B #8B6E25

analogous

#25758B #25428B #3B258B

triadic

#25428B #8B2542 #428B25

tetradic

#25428B #8B2575 #8B6E25 #258B3B

square

#25428B #8B2575 #8B6E25 #258B3B

split-complementary

#25428B #8B3B25 #758B25

monochromatic

#0B142A #182B5B #25428B #3259BB #587BD3

Accessibility & contrast

On white

9.41

#25428B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#25428B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #25428B

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##25428B	#FFFFFF	#000000	##FFFFFF
##25428B	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154B8E

Deuteranopia (green-blind)

#00428A

Tritanopia (blue-blind)

#005360

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #25428b;
/* rgb */ color: rgb(37, 66, 139);
/* oklch */ color: oklch(40.0% 0.127 264.9);

Tailwind

colors: {
  custom: {
    50: '#6e75ad',
    500: '#25428b',
    950: '#000000',
  },
}

SCSS

$custom: #25428b;
$custom-light: #6e75ad;
$custom-dark: #000000;

JSON

{
  "hex": "#25428b",
  "rgb": {
    "r": 37,
    "g": 66,
    "b": 139
  },
  "hsl": {
    "h": 222.941,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.40039,
    "c": 0.12659,
    "h": 264.9
  },
  "luminance": 0.06154
}

Semantic roles & 50–950 ramp

primary

#25428B

secondary

#B79B55

accent

#B547E1

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #25428B

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

Preview Lab → · Contrast checker → · Palette generator →