#427CCC#427CCC

#427CCC is a mid, vivid cyan. Relative luminance 0.199; OKLCH L 58.6% C 0.138 H 257.0°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#427CCC
RGB	rgb(66, 124, 204)
HSL	hsl(215, 58%, 53%)
HSV	hsv(215, 68%, 80%)
CMYK	cmyk(67.6%, 39.2%, 0%, 20%)
CIE-LAB	lab(51.76, 7.05, -47.04)
CIE-LCH	lch(51.76, 47.57, 278.53°)
OKLab	oklab(58.59% -0.031 -0.134)
OKLCH	oklch(58.59% 0.138 257)
XYZ	xyz(20.3496, 19.9311, 59.8897)
Luminance	0.1993 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CCC #CC9242

analogous

#42C1CC #427CCC #4D42CC

triadic

#427CCC #CC427C #7CCC42

tetradic

#427CCC #CC42C1 #CC9242 #42CC4D

square

#427CCC #CC42C1 #CC9242 #42CC4D

split-complementary

#427CCC #CC4D42 #C1CC42

monochromatic

#1F4374 #2C5FA4 #427CCC #729DD9 #A2BFE6

Accessibility & contrast

On white

4.21

#427CCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#427CCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CCC

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CCC	#FFFFFF	#000000	##000000
##427CCC	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5882CF

Deuteranopia (green-blind)

#4375CA

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427ccc;
/* rgb */ color: rgb(66, 124, 204);
/* oklch */ color: oklch(58.6% 0.138 257.0);

Tailwind

colors: {
  custom: {
    50: '#85a1dc',
    500: '#427ccc',
    950: '#000000',
  },
}

SCSS

$custom: #427ccc;
$custom-light: #85a1dc;
$custom-dark: #000000;

JSON

{
  "hex": "#427ccc",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 204
  },
  "hsl": {
    "h": 214.783,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58593,
    "c": 0.13753,
    "h": 257
  },
  "luminance": 0.19933
}

Semantic roles & 50–950 ramp

primary

#427CCC

secondary

#D3BA97

accent

#A047E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #427CCC

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

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