#273B88#273B88

#273B88 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.4% C 0.131 H 268.5°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#273B88
RGB	rgb(39, 59, 136)
HSL	hsl(228, 55%, 34%)
HSV	hsv(228, 71%, 53%)
CMYK	cmyk(71.3%, 56.6%, 0%, 46.7%)
CIE-LAB	lab(27.67, 19.76, -45.44)
CIE-LCH	lch(27.67, 49.56, 293.50°)
OKLab	oklab(38.39% -0.0034 -0.1308)
OKLCH	oklch(38.39% 0.131 268.5)
XYZ	xyz(6.8431, 5.3362, 23.9571)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B88 #887427

analogous

#276C88 #273B88 #442788

triadic

#273B88 #88273B #3B8827

tetradic

#273B88 #88276C #887427 #278844

square

#273B88 #88276C #887427 #278844

split-complementary

#273B88 #884427 #6C8827

monochromatic

#0C1229 #192658 #273B88 #3550B8 #5A72D0

Accessibility & contrast

On white

10.16

#273B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#273B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B88

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B88	#FFFFFF	#000000	##FFFFFF
##273B88	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468B

Deuteranopia (green-blind)

#003D86

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #273b88;
/* rgb */ color: rgb(39, 59, 136);
/* oklch */ color: oklch(38.4% 0.131 268.5);

Tailwind

colors: {
  custom: {
    50: '#6e70ab',
    500: '#273b88',
    950: '#000000',
  },
}

SCSS

$custom: #273b88;
$custom-light: #6e70ab;
$custom-dark: #000000;

JSON

{
  "hex": "#273b88",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 136
  },
  "hsl": {
    "h": 227.629,
    "s": 55.429,
    "l": 34.314
  },
  "oklch": {
    "l": 0.38389,
    "c": 0.13084,
    "h": 268.5
  },
  "luminance": 0.05337
}

Semantic roles & 50–950 ramp

primary

#273B88

secondary

#B5A156

accent

#C049DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273B88

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

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