#273BAF#273BAF

#273BAF is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.184 H 268.9°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#273BAF
RGB	rgb(39, 59, 175)
HSL	hsl(231, 64%, 42%)
HSV	hsv(231, 78%, 69%)
CMYK	cmyk(77.7%, 66.3%, 0%, 31.4%)
CIE-LAB	lab(31.00, 34.50, -63.73)
CIE-LCH	lch(31.00, 72.47, 298.43°)
OKLab	oklab(41.89% -0.0036 -0.1844)
OKLCH	oklch(41.89% 0.184 268.9)
XYZ	xyz(10.1359, 6.6533, 41.2991)
Luminance	0.0665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273BAF #AF9B27

analogous

#277FAF #273BAF #5727AF

triadic

#273BAF #AF273B #3BAF27

tetradic

#273BAF #AF277F #AF9B27 #27AF57

square

#273BAF #AF277F #AF9B27 #27AF57

split-complementary

#273BAF #AF5727 #7FAF27

monochromatic

#11194B #1C2A7D #273BAF #3F55D4 #7181DF

Accessibility & contrast

On white

9.01

#273BAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#273BAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273BAF

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273BAF	#FFFFFF	#000000	##FFFFFF
##273BAF	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B3

Deuteranopia (green-blind)

#0043AD

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #273baf;
/* rgb */ color: rgb(39, 59, 175);
/* oklch */ color: oklch(41.9% 0.184 268.9);

Tailwind

colors: {
  custom: {
    50: '#7871c8',
    500: '#273baf',
    950: '#000000',
  },
}

SCSS

$custom: #273baf;
$custom-light: #7871c8;
$custom-dark: #000000;

JSON

{
  "hex": "#273baf",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 175
  },
  "hsl": {
    "h": 231.176,
    "s": 63.551,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41892,
    "c": 0.18448,
    "h": 268.9
  },
  "luminance": 0.06654
}

Semantic roles & 50–950 ramp

primary

#273BAF

secondary

#C6B96B

accent

#CE41E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #273BAF

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

Preview Lab → · Contrast checker → · Palette generator →