#273B90#273B90

#273B90 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.142 H 268.8°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#273B90
RGB	rgb(39, 59, 144)
HSL	hsl(229, 57%, 36%)
HSV	hsv(229, 73%, 56%)
CMYK	cmyk(72.9%, 59%, 0%, 43.5%)
CIE-LAB	lab(28.31, 22.84, -49.36)
CIE-LCH	lch(28.31, 54.39, 294.83°)
OKLab	oklab(39.06% -0.003 -0.1423)
OKLCH	oklch(39.06% 0.142 268.8)
XYZ	xyz(7.4330, 5.5721, 27.0639)
Luminance	0.0557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B90 #907C27

analogous

#276F90 #273B90 #472790

triadic

#273B90 #90273B #3B9027

tetradic

#273B90 #90276F #907C27 #279047

square

#273B90 #90276F #907C27 #279047

split-complementary

#273B90 #904727 #6F9027

monochromatic

#0D1430 #1A2760 #273B90 #344FC0 #5E74D3

Accessibility & contrast

On white

9.93

#273B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#273B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B90

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B90	#FFFFFF	#000000	##FFFFFF
##273B90	1.00	9.93	2.11	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004893

Deuteranopia (green-blind)

#003E8E

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273b90;
/* rgb */ color: rgb(39, 59, 144);
/* oklch */ color: oklch(39.1% 0.142 268.8);

Tailwind

colors: {
  custom: {
    50: '#7070b1',
    500: '#273b90',
    950: '#000000',
  },
}

SCSS

$custom: #273b90;
$custom-light: #7070b1;
$custom-dark: #000000;

JSON

{
  "hex": "#273b90",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 144
  },
  "hsl": {
    "h": 228.571,
    "s": 57.377,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39064,
    "c": 0.14234,
    "h": 268.8
  },
  "luminance": 0.05573
}

Semantic roles & 50–950 ramp

primary

#273B90

secondary

#B9A75A

accent

#C347E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #273B90

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

Preview Lab → · Contrast checker → · Palette generator →