#273DAA#273DAA

#273DAA is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.176 H 268.5°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#273DAA
RGB	rgb(39, 61, 170)
HSL	hsl(230, 63%, 41%)
HSV	hsv(230, 77%, 67%)
CMYK	cmyk(77.1%, 64.1%, 0%, 33.3%)
CIE-LAB	lab(31.04, 31.35, -60.68)
CIE-LCH	lch(31.04, 68.30, 297.33°)
OKLab	oklab(41.78% -0.0046 -0.1755)
OKLCH	oklch(41.78% 0.176 268.5)
XYZ	xyz(9.7586, 6.6700, 38.7955)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273DAA #AA9427

analogous

#277EAA #273DAA #5327AA

triadic

#273DAA #AA273D #3DAA27

tetradic

#273DAA #AA277E #AA9427 #27AA53

square

#273DAA #AA277E #AA9427 #27AA53

split-complementary

#273DAA #AA5327 #7EAA27

monochromatic

#101946 #1C2B78 #273DAA #3C55D2 #6E81DE

Accessibility & contrast

On white

9.00

#273DAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#273DAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273DAA

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273DAA	#FFFFFF	#000000	##FFFFFF
##273DAA	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAD

Deuteranopia (green-blind)

#0043A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #273daa;
/* rgb */ color: rgb(39, 61, 170);
/* oklch */ color: oklch(41.8% 0.176 268.5);

Tailwind

colors: {
  custom: {
    50: '#7672c4',
    500: '#273daa',
    950: '#000000',
  },
}

SCSS

$custom: #273daa;
$custom-light: #7672c4;
$custom-dark: #000000;

JSON

{
  "hex": "#273daa",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 170
  },
  "hsl": {
    "h": 229.924,
    "s": 62.679,
    "l": 40.98
  },
  "oklch": {
    "l": 0.41782,
    "c": 0.17555,
    "h": 268.5
  },
  "luminance": 0.06671
}

Semantic roles & 50–950 ramp

primary

#273DAA

secondary

#C4B569

accent

#CA42E6

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273DAA

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

Preview Lab → · Contrast checker → · Palette generator →