#273EAB#273EAB

#273EAB is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.176 H 268.3°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#273EAB
RGB	rgb(39, 62, 171)
HSL	hsl(230, 63%, 41%)
HSV	hsv(230, 77%, 67%)
CMYK	cmyk(77.2%, 63.7%, 0%, 32.9%)
CIE-LAB	lab(31.38, 31.07, -60.72)
CIE-LCH	lch(31.38, 68.21, 297.10°)
OKLab	oklab(42.06% -0.0052 -0.1756)
OKLCH	oklch(42.06% 0.176 268.3)
XYZ	xyz(9.9075, 6.8158, 39.3136)
Luminance	0.0682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273EAB #AB9427

analogous

#2780AB #273EAB #5227AB

triadic

#273EAB #AB273E #3EAB27

tetradic

#273EAB #AB2780 #AB9427 #27AB52

square

#273EAB #AB2780 #AB9427 #27AB52

split-complementary

#273EAB #AB5227 #80AB27

monochromatic

#101A47 #1C2C79 #273EAB #3D57D3 #6E82DE

Accessibility & contrast

On white

8.89

#273EAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#273EAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273EAB

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273EAB	#FFFFFF	#000000	##FFFFFF
##273EAB	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AF

Deuteranopia (green-blind)

#0044A9

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #273eab;
/* rgb */ color: rgb(39, 62, 171);
/* oklch */ color: oklch(42.1% 0.176 268.3);

Tailwind

colors: {
  custom: {
    50: '#7673c5',
    500: '#273eab',
    950: '#000000',
  },
}

SCSS

$custom: #273eab;
$custom-light: #7673c5;
$custom-dark: #000000;

JSON

{
  "hex": "#273eab",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 171
  },
  "hsl": {
    "h": 229.545,
    "s": 62.857,
    "l": 41.176
  },
  "oklch": {
    "l": 0.4206,
    "c": 0.17568,
    "h": 268.3
  },
  "luminance": 0.06817
}

Semantic roles & 50–950 ramp

primary

#273EAB

secondary

#C5B569

accent

#C942E6

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273EAB

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

Preview Lab → · Contrast checker → · Palette generator →