#273A83#273A83

#273A83 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.125 H 268.7°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#273A83
RGB	rgb(39, 58, 131)
HSL	hsl(228, 54%, 33%)
HSV	hsv(228, 70%, 51%)
CMYK	cmyk(70.2%, 55.7%, 0%, 48.6%)
CIE-LAB	lab(27.01, 18.53, -43.41)
CIE-LCH	lch(27.01, 47.20, 293.11°)
OKLab	oklab(37.77% -0.0028 -0.1248)
OKLCH	oklch(37.77% 0.125 268.7)
XYZ	xyz(6.4451, 5.0955, 22.1122)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273A83 #837027

analogous

#276883 #273A83 #422783

triadic

#273A83 #83273A #3A8327

tetradic

#273A83 #832768 #837027 #278342

square

#273A83 #832768 #837027 #278342

split-complementary

#273A83 #834227 #688327

monochromatic

#0B1025 #192554 #273A83 #354FB2 #5770CD

Accessibility & contrast

On white

10.40

#273A83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#273A83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273A83

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273A83	#FFFFFF	#000000	##FFFFFF
##273A83	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#044486

Deuteranopia (green-blind)

#003C82

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #273a83;
/* rgb */ color: rgb(39, 58, 131);
/* oklch */ color: oklch(37.8% 0.125 268.7);

Tailwind

colors: {
  custom: {
    50: '#6d6fa8',
    500: '#273a83',
    950: '#000000',
  },
}

SCSS

$custom: #273a83;
$custom-light: #6d6fa8;
$custom-dark: #000000;

JSON

{
  "hex": "#273a83",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 131
  },
  "hsl": {
    "h": 227.609,
    "s": 54.118,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37765,
    "c": 0.12486,
    "h": 268.7
  },
  "luminance": 0.05096
}

Semantic roles & 50–950 ramp

primary

#273A83

secondary

#B29E54

accent

#BF4ADD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273A83

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

Preview Lab → · Contrast checker → · Palette generator →