#273D88#273D88

#273D88 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.128 H 267.7°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#273D88
RGB	rgb(39, 61, 136)
HSL	hsl(226, 55%, 34%)
HSV	hsv(226, 71%, 53%)
CMYK	cmyk(71.3%, 55.1%, 0%, 46.7%)
CIE-LAB	lab(28.24, 18.39, -44.53)
CIE-LCH	lch(28.24, 48.18, 292.44°)
OKLab	oklab(38.81% -0.0052 -0.1281)
OKLCH	oklch(38.81% 0.128 267.7)
XYZ	xyz(6.9478, 5.5457, 23.9920)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273D88 #887227

analogous

#276E88 #273D88 #422788

triadic

#273D88 #88273D #3D8827

tetradic

#273D88 #88276E #887227 #278842

square

#273D88 #88276E #887227 #278842

split-complementary

#273D88 #884227 #6E8827

monochromatic

#0C1229 #192858 #273D88 #3552B8 #5A75D0

Accessibility & contrast

On white

9.96

#273D88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#273D88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273D88

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273D88	#FFFFFF	#000000	##FFFFFF
##273D88	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06478B

Deuteranopia (green-blind)

#003E86

Tritanopia (blue-blind)

#004F5C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273d88;
/* rgb */ color: rgb(39, 61, 136);
/* oklch */ color: oklch(38.8% 0.128 267.7);

Tailwind

colors: {
  custom: {
    50: '#6e72ab',
    500: '#273d88',
    950: '#000000',
  },
}

SCSS

$custom: #273d88;
$custom-light: #6e72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#273d88",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 136
  },
  "hsl": {
    "h": 226.392,
    "s": 55.429,
    "l": 34.314
  },
  "oklch": {
    "l": 0.38814,
    "c": 0.12818,
    "h": 267.7
  },
  "luminance": 0.05546
}

Semantic roles & 50–950 ramp

primary

#273D88

secondary

#B59F56

accent

#BD49DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273D88

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

Preview Lab → · Contrast checker → · Palette generator →