#273E63#273E63

#273E63 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.4% C 0.071 H 259.5°. Best body text is #FFFFFF at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#273E63
RGB	rgb(39, 62, 99)
HSL	hsl(217, 43%, 27%)
HSV	hsv(217, 61%, 39%)
CMYK	cmyk(60.6%, 37.4%, 0%, 61.2%)
CIE-LAB	lab(26.09, 3.53, -24.56)
CIE-LCH	lch(26.09, 24.81, 278.18°)
OKLab	oklab(36.38% -0.0128 -0.0694)
OKLCH	oklch(36.38% 0.071 259.5)
XYZ	xyz(4.8107, 4.7770, 12.4705)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273E63 #634C27

analogous

#275C63 #273E63 #2E2763

triadic

#273E63 #63273E #3E6327

tetradic

#273E63 #63275C #634C27 #27632E

square

#273E63 #63275C #634C27 #27632E

split-complementary

#273E63 #632E27 #5C6327

monochromatic

#090E16 #162337 #273E63 #38598F #4C76B8

Accessibility & contrast

On white

10.74

#273E63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#273E63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273E63

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273E63	#FFFFFF	#000000	##FFFFFF
##273E63	1.00	10.74	1.96	10.74
#FFFFFF	10.74	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4165

Deuteranopia (green-blind)

#273B62

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #273e63;
/* rgb */ color: rgb(39, 62, 99);
/* oklch */ color: oklch(36.4% 0.071 259.5);

Tailwind

colors: {
  custom: {
    50: '#66738f',
    500: '#273e63',
    950: '#000000',
  },
}

SCSS

$custom: #273e63;
$custom-light: #66738f;
$custom-dark: #000000;

JSON

{
  "hex": "#273e63",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 99
  },
  "hsl": {
    "h": 217,
    "s": 43.478,
    "l": 27.059
  },
  "oklch": {
    "l": 0.36382,
    "c": 0.07061,
    "h": 259.5
  },
  "luminance": 0.04777
}

Semantic roles & 50–950 ramp

primary

#273E63

secondary

#967B50

accent

#A355D3

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06080C

muted

#7A7B7D

Preview Lab

Preview with #273E63

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

Preview Lab → · Contrast checker → · Palette generator →