#4279D0#4279D0

#4279D0 is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.2% C 0.146 H 259.2°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#4279D0
RGB	rgb(66, 121, 208)
HSL	hsl(217, 60%, 54%)
HSV	hsv(217, 68%, 82%)
CMYK	cmyk(68.3%, 41.8%, 0%, 18.4%)
CIE-LAB	lab(51.13, 10.31, -50.31)
CIE-LCH	lch(51.13, 51.36, 281.58°)
OKLab	oklab(58.18% -0.0273 -0.1436)
OKLCH	oklch(58.18% 0.146 259.2)
XYZ	xyz(20.4652, 19.3850, 62.3254)
Luminance	0.1939 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279D0 #D09942

analogous

#42C0D0 #4279D0 #5242D0

triadic

#4279D0 #D04279 #79D042

tetradic

#4279D0 #D042C0 #D09942 #42D052

square

#4279D0 #D042C0 #D09942 #42D052

split-complementary

#4279D0 #D05242 #C0D042

monochromatic

#1E4279 #2A5CAA #4279D0 #739CDC #A4BEE8

Accessibility & contrast

On white

4.31

#4279D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#4279D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279D0

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279D0	#FFFFFF	#000000	##000000
##4279D0	1.00	4.31	4.88	4.88
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5081D3

Deuteranopia (green-blind)

#3974CE

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4279d0;
/* rgb */ color: rgb(66, 121, 208);
/* oklch */ color: oklch(58.2% 0.146 259.2);

Tailwind

colors: {
  custom: {
    50: '#869fdf',
    500: '#4279d0',
    950: '#000000',
  },
}

SCSS

$custom: #4279d0;
$custom-light: #869fdf;
$custom-dark: #000000;

JSON

{
  "hex": "#4279d0",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 208
  },
  "hsl": {
    "h": 216.761,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58181,
    "c": 0.14618,
    "h": 259.2
  },
  "luminance": 0.19387
}

Semantic roles & 50–950 ramp

primary

#4279D0

secondary

#D5BE99

accent

#A644E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4279D0

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

Preview Lab → · Contrast checker → · Palette generator →