#273AAD#273AAD

#273AAD is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.183 H 269.1°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#273AAD
RGB	rgb(39, 58, 173)
HSL	hsl(231, 63%, 42%)
HSV	hsv(231, 77%, 68%)
CMYK	cmyk(77.5%, 66.5%, 0%, 32.2%)
CIE-LAB	lab(30.58, 34.41, -63.24)
CIE-LCH	lch(30.58, 71.99, 298.55°)
OKLab	oklab(41.52% -0.0029 -0.183)
OKLCH	oklch(41.52% 0.183 269.1)
XYZ	xyz(9.8900, 6.4735, 40.2553)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273AAD #AD9A27

analogous

#277DAD #273AAD #5727AD

triadic

#273AAD #AD273A #3AAD27

tetradic

#273AAD #AD277D #AD9A27 #27AD57

square

#273AAD #AD277D #AD9A27 #27AD57

split-complementary

#273AAD #AD5727 #7DAD27

monochromatic

#101949 #1C297B #273AAD #3E53D3 #707FDF

Accessibility & contrast

On white

9.15

#273AAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#273AAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273AAD

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273AAD	#FFFFFF	#000000	##FFFFFF
##273AAD	1.00	9.15	2.30	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB1

Deuteranopia (green-blind)

#0042AB

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273aad;
/* rgb */ color: rgb(39, 58, 173);
/* oklch */ color: oklch(41.5% 0.183 269.1);

Tailwind

colors: {
  custom: {
    50: '#7770c6',
    500: '#273aad',
    950: '#000000',
  },
}

SCSS

$custom: #273aad;
$custom-light: #7770c6;
$custom-dark: #000000;

JSON

{
  "hex": "#273aad",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 173
  },
  "hsl": {
    "h": 231.493,
    "s": 63.208,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41523,
    "c": 0.18302,
    "h": 269.1
  },
  "luminance": 0.06475
}

Semantic roles & 50–950 ramp

primary

#273AAD

secondary

#C6B96A

accent

#CF42E6

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #273AAD

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

Preview Lab → · Contrast checker → · Palette generator →