#273DAD#273DAD

#273DAD is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.180 H 268.5°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#273DAD
RGB	rgb(39, 61, 173)
HSL	hsl(230, 63%, 42%)
HSV	hsv(230, 77%, 68%)
CMYK	cmyk(77.5%, 64.7%, 0%, 32.2%)
CIE-LAB	lab(31.31, 32.47, -62.03)
CIE-LCH	lch(31.31, 70.02, 297.63°)
OKLab	oklab(42.06% -0.0047 -0.1795)
OKLCH	oklch(42.06% 0.18 268.5)
XYZ	xyz(10.0457, 6.7848, 40.3072)
Luminance	0.0679 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273DAD #AD9727

analogous

#2780AD #273DAD #5427AD

triadic

#273DAD #AD273D #3DAD27

tetradic

#273DAD #AD2780 #AD9727 #27AD54

square

#273DAD #AD2780 #AD9727 #27AD54

split-complementary

#273DAD #AD5427 #80AD27

monochromatic

#101A49 #1C2B7B #273DAD #3E56D3 #7082DF

Accessibility & contrast

On white

8.91

#273DAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#273DAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273DAD

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273DAD	#FFFFFF	#000000	##FFFFFF
##273DAD	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B1

Deuteranopia (green-blind)

#0043AB

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #273dad;
/* rgb */ color: rgb(39, 61, 173);
/* oklch */ color: oklch(42.1% 0.180 268.5);

Tailwind

colors: {
  custom: {
    50: '#7772c6',
    500: '#273dad',
    950: '#000000',
  },
}

SCSS

$custom: #273dad;
$custom-light: #7772c6;
$custom-dark: #000000;

JSON

{
  "hex": "#273dad",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 173
  },
  "hsl": {
    "h": 230.149,
    "s": 63.208,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42062,
    "c": 0.17952,
    "h": 268.5
  },
  "luminance": 0.06786
}

Semantic roles & 50–950 ramp

primary

#273DAD

secondary

#C6B76A

accent

#CB42E6

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273DAD

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

Preview Lab → · Contrast checker → · Palette generator →