#273F8A#273F8A

#273F8A is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.4% C 0.128 H 267.0°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#273F8A
RGB	rgb(39, 63, 138)
HSL	hsl(225, 56%, 35%)
HSV	hsv(225, 72%, 54%)
CMYK	cmyk(71.7%, 54.3%, 0%, 45.9%)
CIE-LAB	lab(28.96, 17.79, -44.61)
CIE-LCH	lch(28.96, 48.02, 291.74°)
OKLab	oklab(39.41% -0.0068 -0.1283)
OKLCH	oklch(39.41% 0.128 267)
XYZ	xyz(7.2001, 5.8206, 24.7839)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F8A #8A7227

analogous

#27708A #273F8A #41278A

triadic

#273F8A #8A273F #3F8A27

tetradic

#273F8A #8A2770 #8A7227 #278A41

square

#273F8A #8A2770 #8A7227 #278A41

split-complementary

#273F8A #8A4127 #708A27

monochromatic

#0C132B #1A295A #273F8A #3455BA #5B77D1

Accessibility & contrast

On white

9.70

#273F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#273F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F8A

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F8A	#FFFFFF	#000000	##FFFFFF
##273F8A	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B498D

Deuteranopia (green-blind)

#004088

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #273f8a;
/* rgb */ color: rgb(39, 63, 138);
/* oklch */ color: oklch(39.4% 0.128 267.0);

Tailwind

colors: {
  custom: {
    50: '#6e73ad',
    500: '#273f8a',
    950: '#000000',
  },
}

SCSS

$custom: #273f8a;
$custom-light: #6e73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#273f8a",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 138
  },
  "hsl": {
    "h": 225.455,
    "s": 55.932,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39405,
    "c": 0.12844,
    "h": 267
  },
  "luminance": 0.05821
}

Semantic roles & 50–950 ramp

primary

#273F8A

secondary

#B69F57

accent

#BB49DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #273F8A

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

Preview Lab → · Contrast checker → · Palette generator →