#273AB0#273AB0

#273AB0 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.187 H 269.0°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#273AB0
RGB	rgb(39, 58, 176)
HSL	hsl(232, 64%, 42%)
HSV	hsv(232, 78%, 69%)
CMYK	cmyk(77.8%, 67%, 0%, 31%)
CIE-LAB	lab(30.86, 35.51, -64.57)
CIE-LCH	lch(30.86, 73.69, 298.81°)
OKLab	oklab(41.81% -0.0031 -0.1869)
OKLCH	oklch(41.81% 0.187 269)
XYZ	xyz(10.1835, 6.5909, 41.8013)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273AB0 #B09D27

analogous

#277FB0 #273AB0 #5927B0

triadic

#273AB0 #B0273A #3AB027

tetradic

#273AB0 #B0277F #B09D27 #27B059

square

#273AB0 #B0277F #B09D27 #27B059

split-complementary

#273AB0 #B05927 #7FB027

monochromatic

#11194C #1C297E #273AB0 #4054D5 #7281E0

Accessibility & contrast

On white

9.06

#273AB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#273AB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273AB0

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273AB0	#FFFFFF	#000000	##FFFFFF
##273AB0	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB4

Deuteranopia (green-blind)

#0042AE

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #273ab0;
/* rgb */ color: rgb(39, 58, 176);
/* oklch */ color: oklch(41.8% 0.187 269.0);

Tailwind

colors: {
  custom: {
    50: '#7870c9',
    500: '#273ab0',
    950: '#000000',
  },
}

SCSS

$custom: #273ab0;
$custom-light: #7870c9;
$custom-dark: #000000;

JSON

{
  "hex": "#273ab0",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 176
  },
  "hsl": {
    "h": 231.679,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41813,
    "c": 0.18693,
    "h": 269
  },
  "luminance": 0.06592
}

Semantic roles & 50–950 ramp

primary

#273AB0

secondary

#C7BA6C

accent

#D041E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #273AB0

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

Preview Lab → · Contrast checker → · Palette generator →