#273D8A#273D8A

#273D8A is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.0% C 0.131 H 267.8°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#273D8A
RGB	rgb(39, 61, 138)
HSL	hsl(227, 56%, 35%)
HSV	hsv(227, 72%, 54%)
CMYK	cmyk(71.7%, 55.8%, 0%, 45.9%)
CIE-LAB	lab(28.39, 19.16, -45.52)
CIE-LCH	lch(28.39, 49.39, 292.83°)
OKLab	oklab(38.98% -0.005 -0.131)
OKLCH	oklch(38.98% 0.131 267.8)
XYZ	xyz(7.0913, 5.6031, 24.7476)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273D8A #8A7427

analogous

#276E8A #273D8A #43278A

triadic

#273D8A #8A273D #3D8A27

tetradic

#273D8A #8A276E #8A7427 #278A43

square

#273D8A #8A276E #8A7427 #278A43

split-complementary

#273D8A #8A4327 #6E8A27

monochromatic

#0C132B #1A285A #273D8A #3452BA #5B75D1

Accessibility & contrast

On white

9.90

#273D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#273D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273D8A

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273D8A	#FFFFFF	#000000	##FFFFFF
##273D8A	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00488D

Deuteranopia (green-blind)

#003F88

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273d8a;
/* rgb */ color: rgb(39, 61, 138);
/* oklch */ color: oklch(39.0% 0.131 267.8);

Tailwind

colors: {
  custom: {
    50: '#6f72ad',
    500: '#273d8a',
    950: '#000000',
  },
}

SCSS

$custom: #273d8a;
$custom-light: #6f72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#273d8a",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 138
  },
  "hsl": {
    "h": 226.667,
    "s": 55.932,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38977,
    "c": 0.1311,
    "h": 267.8
  },
  "luminance": 0.05604
}

Semantic roles & 50–950 ramp

primary

#273D8A

secondary

#B6A157

accent

#BE49DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273D8A

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

Preview Lab → · Contrast checker → · Palette generator →