#273A8E#273A8E

#273A8E is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.141 H 269.1°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#273A8E
RGB	rgb(39, 58, 142)
HSL	hsl(229, 57%, 35%)
HSV	hsv(229, 73%, 56%)
CMYK	cmyk(72.5%, 59.2%, 0%, 44.3%)
CIE-LAB	lab(27.87, 22.76, -48.83)
CIE-LCH	lch(27.87, 53.88, 294.99°)
OKLab	oklab(38.69% -0.0022 -0.1408)
OKLCH	oklch(38.69% 0.141 269.1)
XYZ	xyz(7.2306, 5.4097, 26.2491)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273A8E #8E7B27

analogous

#276D8E #273A8E #47278E

triadic

#273A8E #8E273A #3A8E27

tetradic

#273A8E #8E276D #8E7B27 #278E47

square

#273A8E #8E276D #8E7B27 #278E47

split-complementary

#273A8E #8E4727 #6D8E27

monochromatic

#0D132E #1A265E #273A8E #344EBE #5D73D2

Accessibility & contrast

On white

10.09

#273A8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#273A8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273A8E

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273A8E	#FFFFFF	#000000	##FFFFFF
##273A8E	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #273a8e;
/* rgb */ color: rgb(39, 58, 142);
/* oklch */ color: oklch(38.7% 0.141 269.1);

Tailwind

colors: {
  custom: {
    50: '#706fb0',
    500: '#273a8e',
    950: '#000000',
  },
}

SCSS

$custom: #273a8e;
$custom-light: #706fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#273a8e",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 142
  },
  "hsl": {
    "h": 228.932,
    "s": 56.906,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38688,
    "c": 0.1408,
    "h": 269.1
  },
  "luminance": 0.0541
}

Semantic roles & 50–950 ramp

primary

#273A8E

secondary

#B8A659

accent

#C448E0

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273A8E

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

Preview Lab → · Contrast checker → · Palette generator →