#4279E0#4279E0

#4279E0 is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.2% C 0.168 H 261.6°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#4279E0
RGB	rgb(66, 121, 224)
HSL	hsl(219, 72%, 57%)
HSV	hsv(219, 71%, 88%)
CMYK	cmyk(70.5%, 46%, 0%, 12.2%)
CIE-LAB	lab(52.08, 16.03, -57.85)
CIE-LCH	lch(52.08, 60.03, 285.48°)
OKLab	oklab(59.21% -0.0244 -0.1658)
OKLCH	oklch(59.21% 0.168 261.6)
XYZ	xyz(22.5339, 20.2124, 73.2204)
Luminance	0.2021 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279E0 #E0A942

analogous

#42C8E0 #4279E0 #5A42E0

triadic

#4279E0 #E04279 #79E042

tetradic

#4279E0 #E042C8 #E0A942 #42E05A

square

#4279E0 #E042C8 #E0A942 #42E05A

split-complementary

#4279E0 #E05A42 #C8E042

monochromatic

#184290 #2059C5 #4279E0 #779EE9 #ABC4F1

Accessibility & contrast

On white

4.16

#4279E0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#4279E0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279E0

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279E0	#FFFFFF	#000000	##000000
##4279E0	1.00	4.16	5.04	5.04
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4384E4

Deuteranopia (green-blind)

#2075DE

Tritanopia (blue-blind)

#0091A2

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4279e0;
/* rgb */ color: rgb(66, 121, 224);
/* oklch */ color: oklch(59.2% 0.168 261.6);

Tailwind

colors: {
  custom: {
    50: '#899fea',
    500: '#4279e0',
    950: '#000000',
  },
}

SCSS

$custom: #4279e0;
$custom-light: #899fea;
$custom-dark: #000000;

JSON

{
  "hex": "#4279e0",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 224
  },
  "hsl": {
    "h": 219.114,
    "s": 71.818,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59211,
    "c": 0.16756,
    "h": 261.6
  },
  "luminance": 0.20215
}

Semantic roles & 50–950 ramp

primary

#4279E0

secondary

#DFC99F

accent

#AF39EF

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4279E0

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

Preview Lab → · Contrast checker → · Palette generator →