#273C8D#273C8D

#273C8D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.0% C 0.137 H 268.3°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#273C8D
RGB	rgb(39, 60, 141)
HSL	hsl(228, 57%, 35%)
HSV	hsv(228, 72%, 55%)
CMYK	cmyk(72.3%, 57.4%, 0%, 44.7%)
CIE-LAB	lab(28.34, 21.01, -47.45)
CIE-LCH	lch(28.34, 51.89, 293.88°)
OKLab	oklab(39.02% -0.004 -0.1367)
OKLCH	oklch(39.02% 0.137 268.3)
XYZ	xyz(7.2586, 5.5854, 25.8897)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C8D #8D7827

analogous

#276F8D #273C8D #45278D

triadic

#273C8D #8D273C #3C8D27

tetradic

#273C8D #8D276F #8D7827 #278D45

square

#273C8D #8D276F #8D7827 #278D45

split-complementary

#273C8D #8D4527 #6F8D27

monochromatic

#0C132D #1A285D #273C8D #3450BD #5C75D2

Accessibility & contrast

On white

9.92

#273C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#273C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C8D

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C8D	#FFFFFF	#000000	##FFFFFF
##273C8D	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273c8d;
/* rgb */ color: rgb(39, 60, 141);
/* oklch */ color: oklch(39.0% 0.137 268.3);

Tailwind

colors: {
  custom: {
    50: '#6f71af',
    500: '#273c8d',
    950: '#000000',
  },
}

SCSS

$custom: #273c8d;
$custom-light: #6f71af;
$custom-dark: #000000;

JSON

{
  "hex": "#273c8d",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 141
  },
  "hsl": {
    "h": 227.647,
    "s": 56.667,
    "l": 35.294
  },
  "oklch": {
    "l": 0.39015,
    "c": 0.13675,
    "h": 268.3
  },
  "luminance": 0.05586
}

Semantic roles & 50–950 ramp

primary

#273C8D

secondary

#B7A459

accent

#C148E0

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273C8D

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

Preview Lab → · Contrast checker → · Palette generator →