#273A85#273A85

#273A85 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.9% C 0.128 H 268.8°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#273A85
RGB	rgb(39, 58, 133)
HSL	hsl(228, 55%, 34%)
HSV	hsv(228, 71%, 52%)
CMYK	cmyk(70.7%, 56.4%, 0%, 47.8%)
CIE-LAB	lab(27.16, 19.30, -44.41)
CIE-LCH	lch(27.16, 48.42, 293.48°)
OKLab	oklab(37.93% -0.0026 -0.1278)
OKLCH	oklch(37.93% 0.128 268.8)
XYZ	xyz(6.5819, 5.1503, 22.8330)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273A85 #857227

analogous

#276985 #273A85 #432785

triadic

#273A85 #85273A #3A8527

tetradic

#273A85 #852769 #857227 #278543

square

#273A85 #852769 #857227 #278543

split-complementary

#273A85 #854327 #698527

monochromatic

#0B1126 #192556 #273A85 #354FB4 #5870CE

Accessibility & contrast

On white

10.34

#273A85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#273A85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273A85

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273A85	#FFFFFF	#000000	##FFFFFF
##273A85	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004588

Deuteranopia (green-blind)

#003C83

Tritanopia (blue-blind)

#004C59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #273a85;
/* rgb */ color: rgb(39, 58, 133);
/* oklch */ color: oklch(37.9% 0.128 268.8);

Tailwind

colors: {
  custom: {
    50: '#6e6fa9',
    500: '#273a85',
    950: '#000000',
  },
}

SCSS

$custom: #273a85;
$custom-light: #6e6fa9;
$custom-dark: #000000;

JSON

{
  "hex": "#273a85",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 133
  },
  "hsl": {
    "h": 227.872,
    "s": 54.651,
    "l": 33.725
  },
  "oklch": {
    "l": 0.3793,
    "c": 0.1278,
    "h": 268.8
  },
  "luminance": 0.05151
}

Semantic roles & 50–950 ramp

primary

#273A85

secondary

#B3A055

accent

#C04ADE

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273A85

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

Preview Lab → · Contrast checker → · Palette generator →