#273A87#273A87

#273A87 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.131 H 268.9°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#273A87
RGB	rgb(39, 58, 135)
HSL	hsl(228, 55%, 34%)
HSV	hsv(228, 71%, 53%)
CMYK	cmyk(71.1%, 57%, 0%, 47.1%)
CIE-LAB	lab(27.31, 20.07, -45.40)
CIE-LCH	lch(27.31, 49.64, 293.84°)
OKLab	oklab(38.1% -0.0025 -0.1307)
OKLCH	oklch(38.1% 0.131 268.9)
XYZ	xyz(6.7214, 5.2061, 23.5676)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273A87 #877427

analogous

#276A87 #273A87 #442787

triadic

#273A87 #87273A #3A8727

tetradic

#273A87 #87276A #877427 #278744

square

#273A87 #87276A #877427 #278744

split-complementary

#273A87 #874427 #6A8727

monochromatic

#0C1128 #192658 #273A87 #354EB6 #5971CF

Accessibility & contrast

On white

10.29

#273A87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#273A87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273A87

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273A87	#FFFFFF	#000000	##FFFFFF
##273A87	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458A

Deuteranopia (green-blind)

#003C85

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #273a87;
/* rgb */ color: rgb(39, 58, 135);
/* oklch */ color: oklch(38.1% 0.131 268.9);

Tailwind

colors: {
  custom: {
    50: '#6e6fab',
    500: '#273a87',
    950: '#000000',
  },
}

SCSS

$custom: #273a87;
$custom-light: #6e6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#273a87",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 135
  },
  "hsl": {
    "h": 228.125,
    "s": 55.172,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38095,
    "c": 0.13071,
    "h": 268.9
  },
  "luminance": 0.05207
}

Semantic roles & 50–950 ramp

primary

#273A87

secondary

#B4A156

accent

#C149DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273A87

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

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