#4279DA#4279DA

#4279DA is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.8% C 0.160 H 260.8°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#4279DA
RGB	rgb(66, 121, 218)
HSL	hsl(218, 67%, 56%)
HSV	hsv(218, 70%, 85%)
CMYK	cmyk(69.7%, 44.5%, 0%, 14.5%)
CIE-LAB	lab(51.72, 13.88, -55.05)
CIE-LCH	lch(51.72, 56.77, 284.15°)
OKLab	oklab(58.82% -0.0254 -0.1575)
OKLCH	oklch(58.82% 0.16 260.8)
XYZ	xyz(21.7345, 19.8927, 69.0103)
Luminance	0.1989 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279DA #DAA342

analogous

#42C5DA #4279DA #5742DA

triadic

#4279DA #DA4279 #79DA42

tetradic

#4279DA #DA42C5 #DAA342 #42DA57

square

#4279DA #DA42C5 #DAA342 #42DA57

split-complementary

#4279DA #DA5742 #C5DA42

monochromatic

#1A4287 #245BBA #4279DA #759DE4 #A8C2EE

Accessibility & contrast

On white

4.22

#4279DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#4279DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279DA

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279DA	#FFFFFF	#000000	##000000
##4279DA	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4983DE

Deuteranopia (green-blind)

#2C75D8

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4279da;
/* rgb */ color: rgb(66, 121, 218);
/* oklch */ color: oklch(58.8% 0.160 260.8);

Tailwind

colors: {
  custom: {
    50: '#879fe6',
    500: '#4279da',
    950: '#000000',
  },
}

SCSS

$custom: #4279da;
$custom-light: #879fe6;
$custom-dark: #000000;

JSON

{
  "hex": "#4279da",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 218
  },
  "hsl": {
    "h": 218.289,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.58817,
    "c": 0.15956,
    "h": 260.8
  },
  "luminance": 0.19895
}

Semantic roles & 50–950 ramp

primary

#4279DA

secondary

#DBC59C

accent

#AC3EEA

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4279DA

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

Preview Lab → · Contrast checker → · Palette generator →