#273D8F#273D8F

#273D8F is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.4% C 0.138 H 268.1°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#273D8F
RGB	rgb(39, 61, 143)
HSL	hsl(227, 57%, 36%)
HSV	hsv(227, 73%, 56%)
CMYK	cmyk(72.7%, 57.3%, 0%, 43.9%)
CIE-LAB	lab(28.78, 21.09, -47.98)
CIE-LCH	lch(28.78, 52.41, 293.73°)
OKLab	oklab(39.39% -0.0047 -0.1382)
OKLCH	oklch(39.39% 0.138 268.1)
XYZ	xyz(7.4617, 5.7512, 26.6981)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273D8F #8F7927

analogous

#27718F #273D8F #45278F

triadic

#273D8F #8F273D #3D8F27

tetradic

#273D8F #8F2771 #8F7927 #278F45

square

#273D8F #8F2771 #8F7927 #278F45

split-complementary

#273D8F #8F4527 #718F27

monochromatic

#0D142F #1A285F #273D8F #3452BF #5D76D3

Accessibility & contrast

On white

9.77

#273D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#273D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273D8F

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273D8F	#FFFFFF	#000000	##FFFFFF
##273D8F	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004992

Deuteranopia (green-blind)

#003F8D

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #273d8f;
/* rgb */ color: rgb(39, 61, 143);
/* oklch */ color: oklch(39.4% 0.138 268.1);

Tailwind

colors: {
  custom: {
    50: '#7072b0',
    500: '#273d8f',
    950: '#000000',
  },
}

SCSS

$custom: #273d8f;
$custom-light: #7072b0;
$custom-dark: #000000;

JSON

{
  "hex": "#273d8f",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 143
  },
  "hsl": {
    "h": 227.308,
    "s": 57.143,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39391,
    "c": 0.1383,
    "h": 268.1
  },
  "luminance": 0.05752
}

Semantic roles & 50–950 ramp

primary

#273D8F

secondary

#B8A45A

accent

#C047E0

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #273D8F

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

Preview Lab → · Contrast checker → · Palette generator →