#273B87#273B87

#273B87 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.129 H 268.5°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#273B87
RGB	rgb(39, 59, 135)
HSL	hsl(228, 55%, 34%)
HSV	hsv(228, 71%, 53%)
CMYK	cmyk(71.1%, 56.3%, 0%, 47.1%)
CIE-LAB	lab(27.59, 19.38, -44.95)
CIE-LCH	lch(27.59, 48.95, 293.32°)
OKLab	oklab(38.31% -0.0034 -0.1293)
OKLCH	oklch(38.31% 0.129 268.5)
XYZ	xyz(6.7723, 5.3079, 23.5846)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B87 #877327

analogous

#276B87 #273B87 #432787

triadic

#273B87 #87273B #3B8727

tetradic

#273B87 #87276B #877327 #278743

square

#273B87 #87276B #877327 #278743

split-complementary

#273B87 #874327 #6B8727

monochromatic

#0C1128 #192658 #273B87 #3550B6 #5972CF

Accessibility & contrast

On white

10.19

#273B87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#273B87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B87

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B87	#FFFFFF	#000000	##FFFFFF
##273B87	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468A

Deuteranopia (green-blind)

#003D85

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #273b87;
/* rgb */ color: rgb(39, 59, 135);
/* oklch */ color: oklch(38.3% 0.129 268.5);

Tailwind

colors: {
  custom: {
    50: '#6e70ab',
    500: '#273b87',
    950: '#000000',
  },
}

SCSS

$custom: #273b87;
$custom-light: #6e70ab;
$custom-dark: #000000;

JSON

{
  "hex": "#273b87",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 135
  },
  "hsl": {
    "h": 227.5,
    "s": 55.172,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38306,
    "c": 0.12939,
    "h": 268.5
  },
  "luminance": 0.05309
}

Semantic roles & 50–950 ramp

primary

#273B87

secondary

#B4A056

accent

#BF49DF

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273B87

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

Preview Lab → · Contrast checker → · Palette generator →