#4279D5#4279D5

#4279D5 is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.5% C 0.153 H 260.1°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#4279D5
RGB	rgb(66, 121, 213)
HSL	hsl(218, 64%, 55%)
HSV	hsv(218, 69%, 84%)
CMYK	cmyk(69%, 43.2%, 0%, 16.5%)
CIE-LAB	lab(51.42, 12.09, -52.69)
CIE-LCH	lch(51.42, 54.06, 282.93°)
OKLab	oklab(58.5% -0.0263 -0.1506)
OKLCH	oklch(58.5% 0.153 260.1)
XYZ	xyz(21.0901, 19.6349, 65.6163)
Luminance	0.1964 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279D5 #D59E42

analogous

#42C2D5 #4279D5 #5542D5

triadic

#4279D5 #D54279 #79D542

tetradic

#4279D5 #D542C2 #D59E42 #42D555

square

#4279D5 #D542C2 #D59E42 #42D555

split-complementary

#4279D5 #D55542 #C2D542

monochromatic

#1C4280 #285BB2 #4279D5 #749DE0 #A6C0EB

Accessibility & contrast

On white

4.26

#4279D5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#4279D5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279D5

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279D5	#FFFFFF	#000000	##000000
##4279D5	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C82D9

Deuteranopia (green-blind)

#3374D3

Tritanopia (blue-blind)

#008E9C

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4279d5;
/* rgb */ color: rgb(66, 121, 213);
/* oklch */ color: oklch(58.5% 0.153 260.1);

Tailwind

colors: {
  custom: {
    50: '#879fe2',
    500: '#4279d5',
    950: '#000000',
  },
}

SCSS

$custom: #4279d5;
$custom-light: #879fe2;
$custom-dark: #000000;

JSON

{
  "hex": "#4279d5",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 213
  },
  "hsl": {
    "h": 217.551,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58496,
    "c": 0.15288,
    "h": 260.1
  },
  "luminance": 0.19637
}

Semantic roles & 50–950 ramp

primary

#4279D5

secondary

#D8C19A

accent

#A941E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0D0E15

muted

#7D7E83

Preview Lab

Preview with #4279D5

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

Preview Lab → · Contrast checker → · Palette generator →