#4279CE#4279CE

#4279CE is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.1% C 0.143 H 258.9°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#4279CE
RGB	rgb(66, 121, 206)
HSL	hsl(216, 59%, 53%)
HSV	hsv(216, 68%, 81%)
CMYK	cmyk(68%, 41.3%, 0%, 19.2%)
CIE-LAB	lab(51.02, 9.60, -49.35)
CIE-LCH	lch(51.02, 50.28, 281.01°)
OKLab	oklab(58.06% -0.0277 -0.1408)
OKLCH	oklch(58.06% 0.144 258.9)
XYZ	xyz(20.2207, 19.2872, 61.0377)
Luminance	0.1929 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279CE #CE9742

analogous

#42BFCE #4279CE #5142CE

triadic

#4279CE #CE4279 #79CE42

tetradic

#4279CE #CE42BF #CE9742 #42CE51

square

#4279CE #CE42BF #CE9742 #42CE51

split-complementary

#4279CE #CE5142 #BFCE42

monochromatic

#1F4177 #2B5CA7 #4279CE #739BDB #A3BEE7

Accessibility & contrast

On white

4.32

#4279CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#4279CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279CE

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279CE	#FFFFFF	#000000	##000000
##4279CE	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5181D1

Deuteranopia (green-blind)

#3B74CC

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4279ce;
/* rgb */ color: rgb(66, 121, 206);
/* oklch */ color: oklch(58.1% 0.143 258.9);

Tailwind

colors: {
  custom: {
    50: '#859fdd',
    500: '#4279ce',
    950: '#000000',
  },
}

SCSS

$custom: #4279ce;
$custom-light: #859fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#4279ce",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 206
  },
  "hsl": {
    "h": 216.429,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.58056,
    "c": 0.1435,
    "h": 258.9
  },
  "luminance": 0.19289
}

Semantic roles & 50–950 ramp

primary

#4279CE

secondary

#D4BC98

accent

#A546E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4279CE

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

Preview Lab → · Contrast checker → · Palette generator →