#273B91#273B91

#273B91 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.144 H 268.8°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#273B91
RGB	rgb(39, 59, 145)
HSL	hsl(229, 58%, 36%)
HSV	hsv(229, 73%, 57%)
CMYK	cmyk(73.1%, 59.3%, 0%, 43.1%)
CIE-LAB	lab(28.39, 23.23, -49.84)
CIE-LCH	lch(28.39, 54.99, 294.99°)
OKLab	oklab(39.15% -0.003 -0.1437)
OKLCH	oklch(39.15% 0.144 268.8)
XYZ	xyz(7.5097, 5.6028, 27.4683)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B91 #917D27

analogous

#277091 #273B91 #482791

triadic

#273B91 #91273B #3B9127

tetradic

#273B91 #912770 #917D27 #279148

square

#273B91 #912770 #917D27 #279148

split-complementary

#273B91 #914827 #709127

monochromatic

#0D1431 #1A2761 #273B91 #344FC1 #5F75D4

Accessibility & contrast

On white

9.90

#273B91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#273B91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B91

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B91	#FFFFFF	#000000	##FFFFFF
##273B91	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004894

Deuteranopia (green-blind)

#003E8F

Tritanopia (blue-blind)

#005060

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273b91;
/* rgb */ color: rgb(39, 59, 145);
/* oklch */ color: oklch(39.1% 0.144 268.8);

Tailwind

colors: {
  custom: {
    50: '#7070b2',
    500: '#273b91',
    950: '#000000',
  },
}

SCSS

$custom: #273b91;
$custom-light: #7070b2;
$custom-dark: #000000;

JSON

{
  "hex": "#273b91",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 145
  },
  "hsl": {
    "h": 228.679,
    "s": 57.609,
    "l": 36.078
  },
  "oklch": {
    "l": 0.3915,
    "c": 0.14376,
    "h": 268.8
  },
  "luminance": 0.05604
}

Semantic roles & 50–950 ramp

primary

#273B91

secondary

#B9A75B

accent

#C447E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #273B91

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

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