#273C90#273C90

#273C90 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.141 H 268.4°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#273C90
RGB	rgb(39, 60, 144)
HSL	hsl(228, 57%, 36%)
HSV	hsv(228, 73%, 56%)
CMYK	cmyk(72.9%, 58.3%, 0%, 43.5%)
CIE-LAB	lab(28.58, 22.16, -48.91)
CIE-LCH	lch(28.58, 53.70, 294.37°)
OKLab	oklab(39.27% -0.0038 -0.141)
OKLCH	oklch(39.27% 0.141 268.4)
XYZ	xyz(7.4849, 5.6759, 27.0812)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C90 #907B27

analogous

#277090 #273C90 #462790

triadic

#273C90 #90273C #3C9027

tetradic

#273C90 #902770 #907B27 #279046

square

#273C90 #902770 #907B27 #279046

split-complementary

#273C90 #904627 #709027

monochromatic

#0D1430 #1A2860 #273C90 #3450C0 #5E75D3

Accessibility & contrast

On white

9.83

#273C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#273C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C90

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C90	#FFFFFF	#000000	##FFFFFF
##273C90	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004893

Deuteranopia (green-blind)

#003F8E

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273c90;
/* rgb */ color: rgb(39, 60, 144);
/* oklch */ color: oklch(39.3% 0.141 268.4);

Tailwind

colors: {
  custom: {
    50: '#7071b1',
    500: '#273c90',
    950: '#000000',
  },
}

SCSS

$custom: #273c90;
$custom-light: #7071b1;
$custom-dark: #000000;

JSON

{
  "hex": "#273c90",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 144
  },
  "hsl": {
    "h": 228,
    "s": 57.377,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39269,
    "c": 0.14104,
    "h": 268.4
  },
  "luminance": 0.05677
}

Semantic roles & 50–950 ramp

primary

#273C90

secondary

#B9A65A

accent

#C247E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #273C90

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

Preview Lab → · Contrast checker → · Palette generator →