#273E78#273E78

#273E78 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.8% C 0.103 H 265.5°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#273E78
RGB	rgb(39, 62, 120)
HSL	hsl(223, 51%, 31%)
HSV	hsv(223, 68%, 47%)
CMYK	cmyk(67.5%, 48.3%, 0%, 52.9%)
CIE-LAB	lab(27.39, 11.50, -35.89)
CIE-LCH	lch(27.39, 37.69, 287.77°)
OKLab	oklab(37.8% -0.0081 -0.1026)
OKLCH	oklch(37.8% 0.103 265.5)
XYZ	xyz(5.9483, 5.2321, 18.4621)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273E78 #786127

analogous

#276678 #273E78 #382778

triadic

#273E78 #78273E #3E7827

tetradic

#273E78 #782766 #786127 #277838

square

#273E78 #782766 #786127 #277838

split-complementary

#273E78 #783827 #667827

monochromatic

#090E1C #18264A #273E78 #3656A6 #5274C7

Accessibility & contrast

On white

10.26

#273E78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#273E78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273E78

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273E78	#FFFFFF	#000000	##FFFFFF
##273E78	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21457A

Deuteranopia (green-blind)

#123D77

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #273e78;
/* rgb */ color: rgb(39, 62, 120);
/* oklch */ color: oklch(37.8% 0.103 265.5);

Tailwind

colors: {
  custom: {
    50: '#6a729f',
    500: '#273e78',
    950: '#000000',
  },
}

SCSS

$custom: #273e78;
$custom-light: #6a729f;
$custom-dark: #000000;

JSON

{
  "hex": "#273e78",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 120
  },
  "hsl": {
    "h": 222.963,
    "s": 50.943,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37803,
    "c": 0.10297,
    "h": 265.5
  },
  "luminance": 0.05233
}

Semantic roles & 50–950 ramp

primary

#273E78

secondary

#AA9151

accent

#B24DDA

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #273E78

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

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