#273C88#273C88

#273C88 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.130 H 268.1°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#273C88
RGB	rgb(39, 60, 136)
HSL	hsl(227, 55%, 34%)
HSV	hsv(227, 71%, 53%)
CMYK	cmyk(71.3%, 55.9%, 0%, 46.7%)
CIE-LAB	lab(27.95, 19.08, -44.99)
CIE-LCH	lch(27.95, 48.87, 292.98°)
OKLab	oklab(38.6% -0.0043 -0.1294)
OKLCH	oklch(38.6% 0.13 268.1)
XYZ	xyz(6.8950, 5.4399, 23.9744)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C88 #887327

analogous

#276D88 #273C88 #422788

triadic

#273C88 #88273C #3C8827

tetradic

#273C88 #88276D #887327 #278842

square

#273C88 #88276D #887327 #278842

split-complementary

#273C88 #884227 #6D8827

monochromatic

#0C1229 #192758 #273C88 #3551B8 #5A73D0

Accessibility & contrast

On white

10.06

#273C88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#273C88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C88

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C88	#FFFFFF	#000000	##FFFFFF
##273C88	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01478B

Deuteranopia (green-blind)

#003E86

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #273c88;
/* rgb */ color: rgb(39, 60, 136);
/* oklch */ color: oklch(38.6% 0.130 268.1);

Tailwind

colors: {
  custom: {
    50: '#6e71ab',
    500: '#273c88',
    950: '#000000',
  },
}

SCSS

$custom: #273c88;
$custom-light: #6e71ab;
$custom-dark: #000000;

JSON

{
  "hex": "#273c88",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 136
  },
  "hsl": {
    "h": 227.01,
    "s": 55.429,
    "l": 34.314
  },
  "oklch": {
    "l": 0.386,
    "c": 0.12951,
    "h": 268.1
  },
  "luminance": 0.05441
}

Semantic roles & 50–950 ramp

primary

#273C88

secondary

#B5A056

accent

#BE49DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273C88

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

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