#273C8A#273C8A

#273C8A is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.132 H 268.2°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#273C8A
RGB	rgb(39, 60, 138)
HSL	hsl(227, 56%, 35%)
HSV	hsv(227, 72%, 54%)
CMYK	cmyk(71.7%, 56.5%, 0%, 45.9%)
CIE-LAB	lab(28.11, 19.85, -45.98)
CIE-LCH	lch(28.11, 50.08, 293.35°)
OKLab	oklab(38.77% -0.0041 -0.1323)
OKLCH	oklch(38.77% 0.132 268.2)
XYZ	xyz(7.0384, 5.4973, 24.7300)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C8A #8A7527

analogous

#276D8A #273C8A #44278A

triadic

#273C8A #8A273C #3C8A27

tetradic

#273C8A #8A276D #8A7527 #278A44

square

#273C8A #8A276D #8A7527 #278A44

split-complementary

#273C8A #8A4427 #6D8A27

monochromatic

#0C132B #1A275A #273C8A #3451BA #5B74D1

Accessibility & contrast

On white

10.00

#273C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#273C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C8A

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C8A	#FFFFFF	#000000	##FFFFFF
##273C8A	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478D

Deuteranopia (green-blind)

#003E88

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #273c8a;
/* rgb */ color: rgb(39, 60, 138);
/* oklch */ color: oklch(38.8% 0.132 268.2);

Tailwind

colors: {
  custom: {
    50: '#6f71ad',
    500: '#273c8a',
    950: '#000000',
  },
}

SCSS

$custom: #273c8a;
$custom-light: #6f71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#273c8a",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 138
  },
  "hsl": {
    "h": 227.273,
    "s": 55.932,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38765,
    "c": 0.13241,
    "h": 268.2
  },
  "luminance": 0.05498
}

Semantic roles & 50–950 ramp

primary

#273C8A

secondary

#B6A257

accent

#BF49DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273C8A

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

Preview Lab → · Contrast checker → · Palette generator →