#273FAA#273FAA

#273FAA is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.173 H 268.1°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#273FAA
RGB	rgb(39, 63, 170)
HSL	hsl(229, 63%, 41%)
HSV	hsv(229, 77%, 67%)
CMYK	cmyk(77.1%, 62.9%, 0%, 33.3%)
CIE-LAB	lab(31.55, 30.04, -59.85)
CIE-LCH	lch(31.55, 66.97, 296.65°)
OKLab	oklab(42.16% -0.0058 -0.173)
OKLCH	oklch(42.16% 0.173 268.1)
XYZ	xyz(9.8674, 6.8875, 38.8318)
Luminance	0.0689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273FAA #AA9227

analogous

#2780AA #273FAA #5127AA

triadic

#273FAA #AA273F #3FAA27

tetradic

#273FAA #AA2780 #AA9227 #27AA51

square

#273FAA #AA2780 #AA9227 #27AA51

split-complementary

#273FAA #AA5127 #80AA27

monochromatic

#101A46 #1C2D78 #273FAA #3C57D2 #6E82DE

Accessibility & contrast

On white

8.83

#273FAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#273FAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273FAA

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273FAA	#FFFFFF	#000000	##FFFFFF
##273FAA	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AD

Deuteranopia (green-blind)

#0044A8

Tritanopia (blue-blind)

#005B6E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #273faa;
/* rgb */ color: rgb(39, 63, 170);
/* oklch */ color: oklch(42.2% 0.173 268.1);

Tailwind

colors: {
  custom: {
    50: '#7673c4',
    500: '#273faa',
    950: '#000000',
  },
}

SCSS

$custom: #273faa;
$custom-light: #7673c4;
$custom-dark: #000000;

JSON

{
  "hex": "#273faa",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 170
  },
  "hsl": {
    "h": 229.008,
    "s": 62.679,
    "l": 40.98
  },
  "oklch": {
    "l": 0.42156,
    "c": 0.17314,
    "h": 268.1
  },
  "luminance": 0.06889
}

Semantic roles & 50–950 ramp

primary

#273FAA

secondary

#C4B369

accent

#C842E6

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273FAA

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

Preview Lab → · Contrast checker → · Palette generator →