#2873B4#2873B4

#2873B4 is a mid, vivid cyan. Relative luminance 0.160; OKLCH L 54.2% C 0.125 H 248.7°. Best body text is #FFFFFF at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#2873B4
RGB	rgb(40, 115, 180)
HSL	hsl(208, 64%, 43%)
HSV	hsv(208, 78%, 71%)
CMYK	cmyk(77.8%, 36.1%, 0%, 29.4%)
CIE-LAB	lab(46.98, 0.16, -40.89)
CIE-LCH	lch(46.98, 40.89, 270.23°)
OKLab	oklab(54.2% -0.0453 -0.1164)
OKLCH	oklch(54.2% 0.125 248.7)
XYZ	xyz(15.2409, 16.0061, 45.4574)
Luminance	0.1601 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2873B4 #B46928

analogous

#28B4AF #2873B4 #282DB4

triadic

#2873B4 #B42873 #73B428

tetradic

#2873B4 #AF28B4 #B46928 #2DB428

square

#2873B4 #AF28B4 #B46928 #2DB428

split-complementary

#2873B4 #B4282D #B4AF28

monochromatic

#123350 #1D5382 #2873B4 #4492D5 #76AFE1

Accessibility & contrast

On white

5.00

#2873B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#2873B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2873B4

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2873B4	#FFFFFF	#000000	##FFFFFF
##2873B4	1.00	5.00	4.20	5.00
#FFFFFF	5.00	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5576B7

Deuteranopia (green-blind)

#406AB3

Tritanopia (blue-blind)

#00838B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #2873b4;
/* rgb */ color: rgb(40, 115, 180);
/* oklch */ color: oklch(54.2% 0.125 248.7);

Tailwind

colors: {
  custom: {
    50: '#779acb',
    500: '#2873b4',
    950: '#000000',
  },
}

SCSS

$custom: #2873b4;
$custom-light: #779acb;
$custom-dark: #000000;

JSON

{
  "hex": "#2873b4",
  "rgb": {
    "r": 40,
    "g": 115,
    "b": 180
  },
  "hsl": {
    "h": 207.857,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.54198,
    "c": 0.12492,
    "h": 248.7
  },
  "luminance": 0.16008
}

Semantic roles & 50–950 ramp

primary

#2873B4

secondary

#C89970

accent

#8E41E7

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2873B4

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

Preview Lab → · Contrast checker → · Palette generator →