#273A88#273A88

#273A88 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.2% C 0.132 H 268.9°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#273A88
RGB	rgb(39, 58, 136)
HSL	hsl(228, 55%, 34%)
HSV	hsv(228, 71%, 53%)
CMYK	cmyk(71.3%, 57.4%, 0%, 46.7%)
CIE-LAB	lab(27.39, 20.45, -45.90)
CIE-LCH	lch(27.39, 50.25, 294.02°)
OKLab	oklab(38.18% -0.0025 -0.1321)
OKLCH	oklch(38.18% 0.132 268.9)
XYZ	xyz(6.7922, 5.2344, 23.9402)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273A88 #887527

analogous

#276B88 #273A88 #442788

triadic

#273A88 #88273A #3A8827

tetradic

#273A88 #88276B #887527 #278844

square

#273A88 #88276B #887527 #278844

split-complementary

#273A88 #884427 #6B8827

monochromatic

#0C1129 #192658 #273A88 #354EB8 #5A71D0

Accessibility & contrast

On white

10.26

#273A88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#273A88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273A88

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273A88	#FFFFFF	#000000	##FFFFFF
##273A88	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458B

Deuteranopia (green-blind)

#003C86

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #273a88;
/* rgb */ color: rgb(39, 58, 136);
/* oklch */ color: oklch(38.2% 0.132 268.9);

Tailwind

colors: {
  custom: {
    50: '#6e6fab',
    500: '#273a88',
    950: '#000000',
  },
}

SCSS

$custom: #273a88;
$custom-light: #6e6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#273a88",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 136
  },
  "hsl": {
    "h": 228.247,
    "s": 55.429,
    "l": 34.314
  },
  "oklch": {
    "l": 0.38179,
    "c": 0.13217,
    "h": 268.9
  },
  "luminance": 0.05235
}

Semantic roles & 50–950 ramp

primary

#273A88

secondary

#B5A256

accent

#C149DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273A88

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

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