#273B9D#273B9D

#273B9D is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.160 H 269.0°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#273B9D
RGB	rgb(39, 59, 157)
HSL	hsl(230, 60%, 38%)
HSV	hsv(230, 75%, 62%)
CMYK	cmyk(75.2%, 62.4%, 0%, 38.4%)
CIE-LAB	lab(29.39, 27.79, -55.53)
CIE-LCH	lch(29.39, 62.10, 296.59°)
OKLab	oklab(40.21% -0.0029 -0.1604)
OKLCH	oklch(40.21% 0.16 269)
XYZ	xyz(8.4844, 5.9927, 32.6013)
Luminance	0.0599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B9D #9D8927

analogous

#27769D #273B9D #4E279D

triadic

#273B9D #9D273B #3B9D27

tetradic

#273B9D #9D2776 #9D8927 #279D4E

square

#273B9D #9D2776 #9D8927 #279D4E

split-complementary

#273B9D #9D4E27 #769D27

monochromatic

#0F163B #1B296C #273B9D #354ECD #6679D9

Accessibility & contrast

On white

9.55

#273B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#273B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B9D

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B9D	#FFFFFF	#000000	##FFFFFF
##273B9D	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA0

Deuteranopia (green-blind)

#00409B

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #273b9d;
/* rgb */ color: rgb(39, 59, 157);
/* oklch */ color: oklch(40.2% 0.160 269.0);

Tailwind

colors: {
  custom: {
    50: '#7370bb',
    500: '#273b9d',
    950: '#000000',
  },
}

SCSS

$custom: #273b9d;
$custom-light: #7370bb;
$custom-dark: #000000;

JSON

{
  "hex": "#273b9d",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 157
  },
  "hsl": {
    "h": 229.831,
    "s": 60.204,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40212,
    "c": 0.16047,
    "h": 269
  },
  "luminance": 0.05994
}

Semantic roles & 50–950 ramp

primary

#273B9D

secondary

#BFAF61

accent

#C844E3

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #273B9D

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

Preview Lab → · Contrast checker → · Palette generator →