#4279EA#4279EA

#4279EA is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.9% C 0.181 H 262.7°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#4279EA
RGB	rgb(66, 121, 234)
HSL	hsl(220, 80%, 59%)
HSV	hsv(220, 72%, 92%)
CMYK	cmyk(71.8%, 48.3%, 0%, 8.2%)
CIE-LAB	lab(52.70, 19.61, -62.46)
CIE-LCH	lch(52.70, 65.46, 287.43°)
OKLab	oklab(59.89% -0.023 -0.1793)
OKLCH	oklch(59.89% 0.181 262.7)
XYZ	xyz(23.9301, 20.7709, 80.5740)
Luminance	0.2077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279EA #EAB342

analogous

#42CDEA #4279EA #5F42EA

triadic

#4279EA #EA4279 #79EA42

tetradic

#4279EA #EA42CD #EAB342 #42EA5F

square

#4279EA #EA42CD #EAB342 #42EA5F

split-complementary

#4279EA #EA5F42 #CDEA42

monochromatic

#1240A0 #1856D7 #4279EA #79A0F0 #B0C7F6

Accessibility & contrast

On white

4.07

#4279EA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#4279EA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279EA

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279EA	#FFFFFF	#000000	##000000
##4279EA	1.00	4.07	5.15	5.15
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3986EE

Deuteranopia (green-blind)

#0077E8

Tritanopia (blue-blind)

#0094A6

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4279ea;
/* rgb */ color: rgb(66, 121, 234);
/* oklch */ color: oklch(59.9% 0.181 262.7);

Tailwind

colors: {
  custom: {
    50: '#8b9ff1',
    500: '#4279ea',
    950: '#000000',
  },
}

SCSS

$custom: #4279ea;
$custom-light: #8b9ff1;
$custom-dark: #000000;

JSON

{
  "hex": "#4279ea",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 234
  },
  "hsl": {
    "h": 220.357,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.59887,
    "c": 0.18079,
    "h": 262.7
  },
  "luminance": 0.20774
}

Semantic roles & 50–950 ramp

primary

#4279EA

secondary

#E5CFA3

accent

#B631F6

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0E17

muted

#7E7E85

Preview Lab

Preview with #4279EA

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

Preview Lab → · Contrast checker → · Palette generator →