#4279C7#4279C7

#4279C7 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 57.6% C 0.134 H 257.4°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#4279C7
RGB	rgb(66, 121, 199)
HSL	hsl(215, 54%, 52%)
HSV	hsv(215, 67%, 78%)
CMYK	cmyk(66.8%, 39.2%, 0%, 22%)
CIE-LAB	lab(50.63, 7.12, -45.98)
CIE-LCH	lch(50.63, 46.53, 278.80°)
OKLab	oklab(57.63% -0.0292 -0.1309)
OKLCH	oklch(57.63% 0.134 257.4)
XYZ	xyz(19.3892, 18.9546, 56.6585)
Luminance	0.1896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279C7 #C79042

analogous

#42BCC7 #4279C7 #4E42C7

triadic

#4279C7 #C74279 #79C742

tetradic

#4279C7 #C742BC #C79042 #42C74E

square

#4279C7 #C742BC #C79042 #42C74E

split-complementary

#4279C7 #C74E42 #BCC742

monochromatic

#21416E #2F5C9D #4279C7 #719AD5 #A0BCE3

Accessibility & contrast

On white

4.38

#4279C7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#4279C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279C7

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279C7	#FFFFFF	#000000	##000000
##4279C7	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#567FCA

Deuteranopia (green-blind)

#4273C5

Tritanopia (blue-blind)

#008B96

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4279c7;
/* rgb */ color: rgb(66, 121, 199);
/* oklch */ color: oklch(57.6% 0.134 257.4);

Tailwind

colors: {
  custom: {
    50: '#849fd8',
    500: '#4279c7',
    950: '#000000',
  },
}

SCSS

$custom: #4279c7;
$custom-light: #849fd8;
$custom-dark: #000000;

JSON

{
  "hex": "#4279c7",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 199
  },
  "hsl": {
    "h": 215.188,
    "s": 54.286,
    "l": 51.961
  },
  "oklch": {
    "l": 0.5763,
    "c": 0.13414,
    "h": 257.4
  },
  "luminance": 0.18957
}

Semantic roles & 50–950 ramp

primary

#4279C7

secondary

#D0B795

accent

#A14ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4279C7

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

Preview Lab → · Contrast checker → · Palette generator →