#4279CA#4279CA

#4279CA is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.8% C 0.138 H 258.1°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#4279CA
RGB	rgb(66, 121, 202)
HSL	hsl(216, 56%, 53%)
HSV	hsv(216, 67%, 79%)
CMYK	cmyk(67.3%, 40.1%, 0%, 20.8%)
CIE-LAB	lab(50.80, 8.18, -47.43)
CIE-LCH	lch(50.80, 48.13, 279.79°)
OKLab	oklab(57.81% -0.0286 -0.1352)
OKLCH	oklch(57.81% 0.138 258.1)
XYZ	xyz(19.7410, 19.0953, 58.5111)
Luminance	0.1910 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279CA #CA9342

analogous

#42BDCA #4279CA #4F42CA

triadic

#4279CA #CA4279 #79CA42

tetradic

#4279CA #CA42BD #CA9342 #42CA4F

square

#4279CA #CA42BD #CA9342 #42CA4F

split-complementary

#4279CA #CA4F42 #BDCA42

monochromatic

#204172 #2D5CA2 #4279CA #729BD7 #A2BDE5

Accessibility & contrast

On white

4.36

#4279CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#4279CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279CA

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279CA	#FFFFFF	#000000	##000000
##4279CA	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5480CD

Deuteranopia (green-blind)

#3F73C8

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4279ca;
/* rgb */ color: rgb(66, 121, 202);
/* oklch */ color: oklch(57.8% 0.138 258.1);

Tailwind

colors: {
  custom: {
    50: '#859fda',
    500: '#4279ca',
    950: '#000000',
  },
}

SCSS

$custom: #4279ca;
$custom-light: #859fda;
$custom-dark: #000000;

JSON

{
  "hex": "#4279ca",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 202
  },
  "hsl": {
    "h": 215.735,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.57811,
    "c": 0.13815,
    "h": 258.1
  },
  "luminance": 0.19097
}

Semantic roles & 50–950 ramp

primary

#4279CA

secondary

#D1BA96

accent

#A248DF

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4279CA

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

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