#4279DE#4279DE

#4279DE is a mid, vivid blue. Relative luminance 0.201; OKLCH L 59.1% C 0.165 H 261.4°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#4279DE
RGB	rgb(66, 121, 222)
HSL	hsl(219, 70%, 56%)
HSV	hsv(219, 70%, 87%)
CMYK	cmyk(70.3%, 45.5%, 0%, 12.9%)
CIE-LAB	lab(51.96, 15.31, -56.92)
CIE-LCH	lch(51.96, 58.94, 285.05°)
OKLab	oklab(59.08% -0.0248 -0.163)
OKLCH	oklch(59.08% 0.165 261.4)
XYZ	xyz(22.2642, 20.1046, 71.8003)
Luminance	0.2011 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279DE #DEA742

analogous

#42C7DE #4279DE #5942DE

triadic

#4279DE #DE4279 #79DE42

tetradic

#4279DE #DE42C7 #DEA742 #42DE59

square

#4279DE #DE42C7 #DEA742 #42DE59

split-complementary

#4279DE #DE5942 #C7DE42

monochromatic

#19428D #225AC1 #4279DE #769EE7 #AAC3F0

Accessibility & contrast

On white

4.18

#4279DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#4279DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279DE

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279DE	#FFFFFF	#000000	##000000
##4279DE	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4584E2

Deuteranopia (green-blind)

#2475DC

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4279de;
/* rgb */ color: rgb(66, 121, 222);
/* oklch */ color: oklch(59.1% 0.165 261.4);

Tailwind

colors: {
  custom: {
    50: '#889fe9',
    500: '#4279de',
    950: '#000000',
  },
}

SCSS

$custom: #4279de;
$custom-light: #889fe9;
$custom-dark: #000000;

JSON

{
  "hex": "#4279de",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 222
  },
  "hsl": {
    "h": 218.846,
    "s": 70.27,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59079,
    "c": 0.1649,
    "h": 261.4
  },
  "luminance": 0.20107
}

Semantic roles & 50–950 ramp

primary

#4279DE

secondary

#DEC79E

accent

#AE3BED

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4279DE

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

Preview Lab → · Contrast checker → · Palette generator →