#273BB0#273BB0

#273BB0 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.186 H 268.9°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#273BB0
RGB	rgb(39, 59, 176)
HSL	hsl(231, 64%, 42%)
HSV	hsv(231, 78%, 69%)
CMYK	cmyk(77.8%, 66.5%, 0%, 31%)
CIE-LAB	lab(31.10, 34.87, -64.18)
CIE-LCH	lch(31.10, 73.04, 298.52°)
OKLab	oklab(41.99% -0.0037 -0.1857)
OKLCH	oklch(41.99% 0.186 268.9)
XYZ	xyz(10.2344, 6.6927, 41.8183)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273BB0 #B09C27

analogous

#2780B0 #273BB0 #5827B0

triadic

#273BB0 #B0273B #3BB027

tetradic

#273BB0 #B02780 #B09C27 #27B058

square

#273BB0 #B02780 #B09C27 #27B058

split-complementary

#273BB0 #B05827 #80B027

monochromatic

#11194C #1C2A7E #273BB0 #4055D5 #7282E0

Accessibility & contrast

On white

8.98

#273BB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#273BB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273BB0

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273BB0	#FFFFFF	#000000	##FFFFFF
##273BB0	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B4

Deuteranopia (green-blind)

#0043AE

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #273bb0;
/* rgb */ color: rgb(39, 59, 176);
/* oklch */ color: oklch(42.0% 0.186 268.9);

Tailwind

colors: {
  custom: {
    50: '#7871c9',
    500: '#273bb0',
    950: '#000000',
  },
}

SCSS

$custom: #273bb0;
$custom-light: #7871c9;
$custom-dark: #000000;

JSON

{
  "hex": "#273bb0",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 176
  },
  "hsl": {
    "h": 231.241,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41988,
    "c": 0.18578,
    "h": 268.9
  },
  "luminance": 0.06694
}

Semantic roles & 50–950 ramp

primary

#273BB0

secondary

#C7B96C

accent

#CF41E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #273BB0

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

Preview Lab → · Contrast checker → · Palette generator →