#4279C8#4279C8

#4279C8 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 57.7% C 0.135 H 257.6°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#4279C8
RGB	rgb(66, 121, 200)
HSL	hsl(215, 55%, 52%)
HSV	hsv(215, 67%, 78%)
CMYK	cmyk(67%, 39.5%, 0%, 21.6%)
CIE-LAB	lab(50.69, 7.47, -46.46)
CIE-LCH	lch(50.69, 47.06, 279.14°)
OKLab	oklab(57.69% -0.029 -0.1323)
OKLCH	oklch(57.69% 0.135 257.6)
XYZ	xyz(19.5057, 19.0012, 57.2720)
Luminance	0.1900 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279C8 #C89142

analogous

#42BCC8 #4279C8 #4E42C8

triadic

#4279C8 #C84279 #79C842

tetradic

#4279C8 #C842BC #C89142 #42C84E

square

#4279C8 #C842BC #C89142 #42C84E

split-complementary

#4279C8 #C84E42 #BCC842

monochromatic

#20416F #2E5C9F #4279C8 #719BD6 #A1BCE4

Accessibility & contrast

On white

4.37

#4279C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#4279C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279C8

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279C8	#FFFFFF	#000000	##000000
##4279C8	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#557FCB

Deuteranopia (green-blind)

#4173C6

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4279c8;
/* rgb */ color: rgb(66, 121, 200);
/* oklch */ color: oklch(57.7% 0.135 257.6);

Tailwind

colors: {
  custom: {
    50: '#849fd9',
    500: '#4279c8',
    950: '#000000',
  },
}

SCSS

$custom: #4279c8;
$custom-light: #849fd9;
$custom-dark: #000000;

JSON

{
  "hex": "#4279c8",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 200
  },
  "hsl": {
    "h": 215.373,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.5769,
    "c": 0.13547,
    "h": 257.6
  },
  "luminance": 0.19003
}

Semantic roles & 50–950 ramp

primary

#4279C8

secondary

#D0B896

accent

#A14ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4279C8

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

Preview Lab → · Contrast checker → · Palette generator →