#273D81#273D81

#273D81 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.3% C 0.118 H 267.2°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#273D81
RGB	rgb(39, 61, 129)
HSL	hsl(225, 54%, 33%)
HSV	hsv(225, 70%, 51%)
CMYK	cmyk(69.8%, 52.7%, 0%, 49.4%)
CIE-LAB	lab(27.72, 15.68, -41.01)
CIE-LCH	lch(27.72, 43.90, 290.92°)
OKLab	oklab(38.26% -0.0058 -0.1177)
OKLCH	oklch(38.26% 0.118 267.2)
XYZ	xyz(6.4665, 5.3532, 21.4571)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273D81 #816B27

analogous

#276A81 #273D81 #3E2781

triadic

#273D81 #81273D #3D8127

tetradic

#273D81 #81276A #816B27 #27813E

square

#273D81 #81276A #816B27 #27813E

split-complementary

#273D81 #813E27 #6A8127

monochromatic

#0B1123 #192752 #273D81 #3553B0 #5673CC

Accessibility & contrast

On white

10.14

#273D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#273D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273D81

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273D81	#FFFFFF	#000000	##FFFFFF
##273D81	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144683

Deuteranopia (green-blind)

#003E80

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #273d81;
/* rgb */ color: rgb(39, 61, 129);
/* oklch */ color: oklch(38.3% 0.118 267.2);

Tailwind

colors: {
  custom: {
    50: '#6c72a6',
    500: '#273d81',
    950: '#000000',
  },
}

SCSS

$custom: #273d81;
$custom-light: #6c72a6;
$custom-dark: #000000;

JSON

{
  "hex": "#273d81",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 129
  },
  "hsl": {
    "h": 225.333,
    "s": 53.571,
    "l": 32.941
  },
  "oklch": {
    "l": 0.38257,
    "c": 0.11786,
    "h": 267.2
  },
  "luminance": 0.05354
}

Semantic roles & 50–950 ramp

primary

#273D81

secondary

#B19A53

accent

#B94BDD

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #273D81

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

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