#273F9D#273F9D

#273F9D is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.155 H 267.9°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#273F9D
RGB	rgb(39, 63, 157)
HSL	hsl(228, 60%, 38%)
HSV	hsv(228, 75%, 62%)
CMYK	cmyk(75.2%, 59.9%, 0%, 38.4%)
CIE-LAB	lab(30.45, 25.11, -53.81)
CIE-LCH	lch(30.45, 59.39, 295.02°)
OKLab	oklab(41% -0.0058 -0.1553)
OKLCH	oklch(41% 0.155 267.9)
XYZ	xyz(8.6979, 6.4197, 32.6725)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F9D #9D8527

analogous

#277A9D #273F9D #4A279D

triadic

#273F9D #9D273F #3F9D27

tetradic

#273F9D #9D277A #9D8527 #279D4A

square

#273F9D #9D277A #9D8527 #279D4A

split-complementary

#273F9D #9D4A27 #7A9D27

monochromatic

#0F183B #1B2B6C #273F9D #3553CD #667DD9

Accessibility & contrast

On white

9.19

#273F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#273F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F9D

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F9D	#FFFFFF	#000000	##FFFFFF
##273F9D	1.00	9.19	2.28	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA0

Deuteranopia (green-blind)

#00429B

Tritanopia (blue-blind)

#005767

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273f9d;
/* rgb */ color: rgb(39, 63, 157);
/* oklch */ color: oklch(41.0% 0.155 267.9);

Tailwind

colors: {
  custom: {
    50: '#7373bb',
    500: '#273f9d',
    950: '#000000',
  },
}

SCSS

$custom: #273f9d;
$custom-light: #7373bb;
$custom-dark: #000000;

JSON

{
  "hex": "#273f9d",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 157
  },
  "hsl": {
    "h": 227.797,
    "s": 60.204,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40995,
    "c": 0.15545,
    "h": 267.9
  },
  "luminance": 0.06421
}

Semantic roles & 50–950 ramp

primary

#273F9D

secondary

#BFAC61

accent

#C344E3

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #273F9D

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

Preview Lab → · Contrast checker → · Palette generator →