#273F71#273F71

#273F71 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.5% C 0.091 H 263.4°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#273F71
RGB	rgb(39, 63, 113)
HSL	hsl(221, 49%, 30%)
HSV	hsv(221, 65%, 44%)
CMYK	cmyk(65.5%, 44.2%, 0%, 55.7%)
CIE-LAB	lab(27.24, 8.12, -31.70)
CIE-LCH	lch(27.24, 32.73, 284.37°)
OKLab	oklab(37.54% -0.0105 -0.0903)
OKLCH	oklch(37.54% 0.091 263.4)
XYZ	xyz(5.5938, 5.1781, 16.3243)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F71 #715927

analogous

#276471 #273F71 #342771

triadic

#273F71 #71273F #3F7127

tetradic

#273F71 #712764 #715927 #277134

square

#273F71 #712764 #715927 #277134

split-complementary

#273F71 #713427 #647127

monochromatic

#080D17 #172644 #273F71 #37589E #5075C3

Accessibility & contrast

On white

10.32

#273F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#273F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F71

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F71	#FFFFFF	#000000	##FFFFFF
##273F71	1.00	10.32	2.04	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284473

Deuteranopia (green-blind)

#1D3D70

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #273f71;
/* rgb */ color: rgb(39, 63, 113);
/* oklch */ color: oklch(37.5% 0.091 263.4);

Tailwind

colors: {
  custom: {
    50: '#69739a',
    500: '#273f71',
    950: '#000000',
  },
}

SCSS

$custom: #273f71;
$custom-light: #69739a;
$custom-dark: #000000;

JSON

{
  "hex": "#273f71",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 113
  },
  "hsl": {
    "h": 220.541,
    "s": 48.684,
    "l": 29.804
  },
  "oklch": {
    "l": 0.37541,
    "c": 0.09093,
    "h": 263.4
  },
  "luminance": 0.05179
}

Semantic roles & 50–950 ramp

primary

#273F71

secondary

#A38850

accent

#AC50D8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #273F71

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

Preview Lab → · Contrast checker → · Palette generator →