#273CB0#273CB0

#273CB0 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.185 H 268.7°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#273CB0
RGB	rgb(39, 60, 176)
HSL	hsl(231, 64%, 42%)
HSV	hsv(231, 78%, 69%)
CMYK	cmyk(77.8%, 65.9%, 0%, 31%)
CIE-LAB	lab(31.34, 34.23, -63.78)
CIE-LCH	lch(31.34, 72.38, 298.22°)
OKLab	oklab(42.17% -0.0042 -0.1846)
OKLCH	oklch(42.17% 0.185 268.7)
XYZ	xyz(10.2863, 6.7965, 41.8356)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273CB0 #B09B27

analogous

#2781B0 #273CB0 #5727B0

triadic

#273CB0 #B0273C #3CB027

tetradic

#273CB0 #B02781 #B09B27 #27B057

square

#273CB0 #B02781 #B09B27 #27B057

split-complementary

#273CB0 #B05727 #81B027

monochromatic

#111A4C #1C2B7E #273CB0 #4056D5 #7283E0

Accessibility & contrast

On white

8.90

#273CB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#273CB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273CB0

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273CB0	#FFFFFF	#000000	##FFFFFF
##273CB0	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B4

Deuteranopia (green-blind)

#0043AE

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #273cb0;
/* rgb */ color: rgb(39, 60, 176);
/* oklch */ color: oklch(42.2% 0.185 268.7);

Tailwind

colors: {
  custom: {
    50: '#7871c9',
    500: '#273cb0',
    950: '#000000',
  },
}

SCSS

$custom: #273cb0;
$custom-light: #7871c9;
$custom-dark: #000000;

JSON

{
  "hex": "#273cb0",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 176
  },
  "hsl": {
    "h": 230.803,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42166,
    "c": 0.18462,
    "h": 268.7
  },
  "luminance": 0.06798
}

Semantic roles & 50–950 ramp

primary

#273CB0

secondary

#C7B96C

accent

#CD41E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273CB0

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

Preview Lab → · Contrast checker → · Palette generator →