#273E8B#273E8B

#273E8B is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.131 H 267.5°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#273E8B
RGB	rgb(39, 62, 139)
HSL	hsl(226, 56%, 35%)
HSV	hsv(226, 72%, 55%)
CMYK	cmyk(71.9%, 55.4%, 0%, 45.5%)
CIE-LAB	lab(28.75, 18.86, -45.56)
CIE-LCH	lch(28.75, 49.31, 292.49°)
OKLab	oklab(39.27% -0.0058 -0.1311)
OKLCH	oklch(39.27% 0.131 267.5)
XYZ	xyz(7.2179, 5.7399, 25.1486)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273E8B #8B7427

analogous

#27708B #273E8B #42278B

triadic

#273E8B #8B273E #3E8B27

tetradic

#273E8B #8B2770 #8B7427 #278B42

square

#273E8B #8B2770 #8B7427 #278B42

split-complementary

#273E8B #8B4227 #708B27

monochromatic

#0C132B #1A295B #273E8B #3453BB #5B76D1

Accessibility & contrast

On white

9.78

#273E8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#273E8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273E8B

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273E8B	#FFFFFF	#000000	##FFFFFF
##273E8B	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03498E

Deuteranopia (green-blind)

#003F89

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #273e8b;
/* rgb */ color: rgb(39, 62, 139);
/* oklch */ color: oklch(39.3% 0.131 267.5);

Tailwind

colors: {
  custom: {
    50: '#6f72ad',
    500: '#273e8b',
    950: '#000000',
  },
}

SCSS

$custom: #273e8b;
$custom-light: #6f72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#273e8b",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 139
  },
  "hsl": {
    "h": 226.2,
    "s": 56.18,
    "l": 34.902
  },
  "oklch": {
    "l": 0.39271,
    "c": 0.13122,
    "h": 267.5
  },
  "luminance": 0.05741
}

Semantic roles & 50–950 ramp

primary

#273E8B

secondary

#B6A058

accent

#BD48DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #273E8B

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

Preview Lab → · Contrast checker → · Palette generator →