#2873B3#2873B3

#2873B3 is a mid, vivid cyan. Relative luminance 0.160; OKLCH L 54.1% C 0.124 H 248.4°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#2873B3
RGB	rgb(40, 115, 179)
HSL	hsl(208, 63%, 43%)
HSV	hsv(208, 78%, 70%)
CMYK	cmyk(77.7%, 35.8%, 0%, 29.8%)
CIE-LAB	lab(46.93, -0.21, -40.39)
CIE-LCH	lch(46.93, 40.39, 269.70°)
OKLab	oklab(54.14% -0.0456 -0.115)
OKLCH	oklch(54.14% 0.124 248.4)
XYZ	xyz(15.1394, 15.9655, 44.9228)
Luminance	0.1597 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2873B3 #B36828

analogous

#28B3AD #2873B3 #282DB3

triadic

#2873B3 #B32873 #73B328

tetradic

#2873B3 #AD28B3 #B36828 #2DB328

square

#2873B3 #AD28B3 #B36828 #2DB328

split-complementary

#2873B3 #B3282D #B3AD28

monochromatic

#12334F #1D5381 #2873B3 #4392D5 #75AFE0

Accessibility & contrast

On white

5.01

#2873B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#2873B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2873B3

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2873B3	#FFFFFF	#000000	##FFFFFF
##2873B3	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5576B6

Deuteranopia (green-blind)

#4169B2

Tritanopia (blue-blind)

#00828A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #2873b3;
/* rgb */ color: rgb(40, 115, 179);
/* oklch */ color: oklch(54.1% 0.124 248.4);

Tailwind

colors: {
  custom: {
    50: '#769aca',
    500: '#2873b3',
    950: '#000000',
  },
}

SCSS

$custom: #2873b3;
$custom-light: #769aca;
$custom-dark: #000000;

JSON

{
  "hex": "#2873b3",
  "rgb": {
    "r": 40,
    "g": 115,
    "b": 179
  },
  "hsl": {
    "h": 207.626,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.54139,
    "c": 0.12367,
    "h": 248.4
  },
  "luminance": 0.15967
}

Semantic roles & 50–950 ramp

primary

#2873B3

secondary

#C8986F

accent

#8D41E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2873B3

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

Preview Lab → · Contrast checker → · Palette generator →