#4279CD#4279CD

#4279CD is a mid, vivid blue. Relative luminance 0.192; OKLCH L 58.0% C 0.142 H 258.7°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#4279CD
RGB	rgb(66, 121, 205)
HSL	hsl(216, 58%, 53%)
HSV	hsv(216, 68%, 80%)
CMYK	cmyk(67.8%, 41%, 0%, 19.6%)
CIE-LAB	lab(50.97, 9.24, -48.87)
CIE-LCH	lch(50.97, 49.74, 280.71°)
OKLab	oklab(58% -0.0279 -0.1394)
OKLCH	oklch(58% 0.142 258.7)
XYZ	xyz(20.0996, 19.2387, 60.3999)
Luminance	0.1924 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279CD #CD9642

analogous

#42BECD #4279CD #5042CD

triadic

#4279CD #CD4279 #79CD42

tetradic

#4279CD #CD42BE #CD9642 #42CD50

square

#4279CD #CD42BE #CD9642 #42CD50

split-complementary

#4279CD #CD5042 #BECD42

monochromatic

#1F4176 #2C5CA6 #4279CD #729BDA #A3BEE7

Accessibility & contrast

On white

4.33

#4279CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#4279CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279CD

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279CD	#FFFFFF	#000000	##000000
##4279CD	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5280D0

Deuteranopia (green-blind)

#3C73CB

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4279cd;
/* rgb */ color: rgb(66, 121, 205);
/* oklch */ color: oklch(58.0% 0.142 258.7);

Tailwind

colors: {
  custom: {
    50: '#859fdd',
    500: '#4279cd',
    950: '#000000',
  },
}

SCSS

$custom: #4279cd;
$custom-light: #859fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#4279cd",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 205
  },
  "hsl": {
    "h": 216.259,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.57995,
    "c": 0.14216,
    "h": 258.7
  },
  "luminance": 0.19241
}

Semantic roles & 50–950 ramp

primary

#4279CD

secondary

#D3BC97

accent

#A446E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4279CD

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

Preview Lab → · Contrast checker → · Palette generator →