#2873EB#2873EB

#2873EB is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.9% C 0.196 H 259.8°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#2873EB
RGB	rgb(40, 115, 235)
HSL	hsl(217, 83%, 54%)
HSV	hsv(217, 83%, 92%)
CMYK	cmyk(83%, 51.1%, 0%, 7.8%)
CIE-LAB	lab(50.34, 21.01, -66.86)
CIE-LCH	lch(50.34, 70.08, 287.45°)
OKLab	oklab(57.88% -0.0347 -0.1927)
OKLCH	oklch(57.88% 0.196 259.8)
XYZ	xyz(21.9957, 18.7080, 81.0329)
Luminance	0.1871 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2873EB #EBA028

analogous

#28D5EB #2873EB #3F28EB

triadic

#2873EB #EB2873 #73EB28

tetradic

#2873EB #EB28D5 #EBA028 #28EB3F

square

#2873EB #EB28D5 #EBA028 #28EB3F

split-complementary

#2873EB #EB3F28 #D5EB28

monochromatic

#0D3E8C #1256C4 #2873EB #6097F0 #98BCF5

Accessibility & contrast

On white

4.43

#2873EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#2873EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2873EB

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2873EB	#FFFFFF	#000000	##000000
##2873EB	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F81EF

Deuteranopia (green-blind)

#0070E9

Tritanopia (blue-blind)

#0090A4

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #2873eb;
/* rgb */ color: rgb(40, 115, 235);
/* oklch */ color: oklch(57.9% 0.196 259.8);

Tailwind

colors: {
  custom: {
    50: '#839af2',
    500: '#2873eb',
    950: '#000000',
  },
}

SCSS

$custom: #2873eb;
$custom-light: #839af2;
$custom-dark: #000000;

JSON

{
  "hex": "#2873eb",
  "rgb": {
    "r": 40,
    "g": 115,
    "b": 235
  },
  "hsl": {
    "h": 216.923,
    "s": 82.979,
    "l": 53.922
  },
  "oklch": {
    "l": 0.57882,
    "c": 0.19584,
    "h": 259.8
  },
  "luminance": 0.18711
}

Semantic roles & 50–950 ramp

primary

#2873EB

secondary

#E1C18E

accent

#AB2EF9

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E17

muted

#7E7E85

Preview Lab

Preview with #2873EB

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

Preview Lab → · Contrast checker → · Palette generator →