#273F73#273F73

#273F73 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.7% C 0.094 H 263.8°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#273F73
RGB	rgb(39, 63, 115)
HSL	hsl(221, 49%, 30%)
HSV	hsv(221, 66%, 45%)
CMYK	cmyk(66.1%, 45.2%, 0%, 54.9%)
CIE-LAB	lab(27.36, 8.89, -32.77)
CIE-LCH	lch(27.36, 33.95, 285.18°)
OKLab	oklab(37.68% -0.0101 -0.0935)
OKLCH	oklch(37.68% 0.094 263.8)
XYZ	xyz(5.7076, 5.2236, 16.9238)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F73 #735B27

analogous

#276573 #273F73 #352773

triadic

#273F73 #73273F #3F7327

tetradic

#273F73 #732765 #735B27 #277335

square

#273F73 #732765 #735B27 #277335

split-complementary

#273F73 #733527 #657327

monochromatic

#080D18 #182645 #273F73 #3658A1 #5175C4

Accessibility & contrast

On white

10.27

#273F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#273F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F73

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F73	#FFFFFF	#000000	##FFFFFF
##273F73	1.00	10.27	2.04	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274475

Deuteranopia (green-blind)

#1B3D72

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #273f73;
/* rgb */ color: rgb(39, 63, 115);
/* oklch */ color: oklch(37.7% 0.094 263.8);

Tailwind

colors: {
  custom: {
    50: '#69739b',
    500: '#273f73',
    950: '#000000',
  },
}

SCSS

$custom: #273f73;
$custom-light: #69739b;
$custom-dark: #000000;

JSON

{
  "hex": "#273f73",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 115
  },
  "hsl": {
    "h": 221.053,
    "s": 49.351,
    "l": 30.196
  },
  "oklch": {
    "l": 0.37679,
    "c": 0.09401,
    "h": 263.8
  },
  "luminance": 0.05224
}

Semantic roles & 50–950 ramp

primary

#273F73

secondary

#A58B50

accent

#AD4FD9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #273F73

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

Preview Lab → · Contrast checker → · Palette generator →