#273D78#273D78

#273D78 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.6% C 0.104 H 266.1°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#273D78
RGB	rgb(39, 61, 120)
HSL	hsl(224, 51%, 31%)
HSV	hsv(224, 68%, 47%)
CMYK	cmyk(67.5%, 49.2%, 0%, 52.9%)
CIE-LAB	lab(27.09, 12.20, -36.38)
CIE-LCH	lch(27.09, 38.37, 288.54°)
OKLab	oklab(37.57% -0.007 -0.1041)
OKLCH	oklch(37.57% 0.104 266.1)
XYZ	xyz(5.8944, 5.1243, 18.4441)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273D78 #786227

analogous

#276578 #273D78 #392778

triadic

#273D78 #78273D #3D7827

tetradic

#273D78 #782765 #786227 #277839

square

#273D78 #782765 #786227 #277839

split-complementary

#273D78 #783927 #657827

monochromatic

#090E1C #18264A #273D78 #3654A6 #5272C7

Accessibility & contrast

On white

10.37

#273D78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#273D78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273D78

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273D78	#FFFFFF	#000000	##FFFFFF
##273D78	1.00	10.37	2.03	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F447A

Deuteranopia (green-blind)

#0F3D77

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #273d78;
/* rgb */ color: rgb(39, 61, 120);
/* oklch */ color: oklch(37.6% 0.104 266.1);

Tailwind

colors: {
  custom: {
    50: '#6b729f',
    500: '#273d78',
    950: '#000000',
  },
}

SCSS

$custom: #273d78;
$custom-light: #6b729f;
$custom-dark: #000000;

JSON

{
  "hex": "#273d78",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 120
  },
  "hsl": {
    "h": 223.704,
    "s": 50.943,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37573,
    "c": 0.10432,
    "h": 266.1
  },
  "luminance": 0.05125
}

Semantic roles & 50–950 ramp

primary

#273D78

secondary

#AA9251

accent

#B44DDA

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #273D78

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

Preview Lab → · Contrast checker → · Palette generator →