#4279D2#4279D2

#4279D2 is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.3% C 0.149 H 259.6°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#4279D2
RGB	rgb(66, 121, 210)
HSL	hsl(217, 62%, 54%)
HSV	hsv(217, 69%, 82%)
CMYK	cmyk(68.6%, 42.4%, 0%, 17.6%)
CIE-LAB	lab(51.25, 11.02, -51.26)
CIE-LCH	lch(51.25, 52.44, 282.13°)
OKLab	oklab(58.31% -0.0269 -0.1464)
OKLCH	oklch(58.31% 0.149 259.6)
XYZ	xyz(20.7128, 19.4840, 63.6295)
Luminance	0.1949 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279D2 #D29B42

analogous

#42C1D2 #4279D2 #5342D2

triadic

#4279D2 #D24279 #79D242

tetradic

#4279D2 #D242C1 #D29B42 #42D253

square

#4279D2 #D242C1 #D29B42 #42D253

split-complementary

#4279D2 #D25342 #C1D242

monochromatic

#1E427C #295CAD #4279D2 #739CDE #A5BFEA

Accessibility & contrast

On white

4.29

#4279D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#4279D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279D2

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279D2	#FFFFFF	#000000	##000000
##4279D2	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F81D5

Deuteranopia (green-blind)

#3774D0

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4279d2;
/* rgb */ color: rgb(66, 121, 210);
/* oklch */ color: oklch(58.3% 0.149 259.6);

Tailwind

colors: {
  custom: {
    50: '#869fe0',
    500: '#4279d2',
    950: '#000000',
  },
}

SCSS

$custom: #4279d2;
$custom-light: #869fe0;
$custom-dark: #000000;

JSON

{
  "hex": "#4279d2",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 210
  },
  "hsl": {
    "h": 217.083,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58306,
    "c": 0.14886,
    "h": 259.6
  },
  "luminance": 0.19486
}

Semantic roles & 50–950 ramp

primary

#4279D2

secondary

#D7BF99

accent

#A743E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4279D2

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

Preview Lab → · Contrast checker → · Palette generator →