#427FCC#427FCC

#427FCC is a mid, vivid cyan. Relative luminance 0.207; OKLCH L 59.3% C 0.134 H 255.4°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#427FCC
RGB	rgb(66, 127, 204)
HSL	hsl(213, 58%, 53%)
HSV	hsv(213, 68%, 80%)
CMYK	cmyk(67.6%, 37.7%, 0%, 20%)
CIE-LAB	lab(52.61, 5.23, -45.68)
CIE-LCH	lch(52.61, 45.98, 276.53°)
OKLab	oklab(59.26% -0.034 -0.13)
OKLCH	oklch(59.26% 0.134 255.4)
XYZ	xyz(20.7312, 20.6945, 60.0169)
Luminance	0.2070 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FCC #CC8F42

analogous

#42C4CC #427FCC #4A42CC

triadic

#427FCC #CC427F #7FCC42

tetradic

#427FCC #CC42C4 #CC8F42 #42CC4A

square

#427FCC #CC42C4 #CC8F42 #42CC4A

split-complementary

#427FCC #CC4A42 #C4CC42

monochromatic

#1F4574 #2C61A4 #427FCC #72A0D9 #A2C0E6

Accessibility & contrast

On white

4.09

#427FCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#427FCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FCC

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FCC	#FFFFFF	#000000	##000000
##427FCC	1.00	4.09	5.14	5.14
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C85CF

Deuteranopia (green-blind)

#4878CA

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427fcc;
/* rgb */ color: rgb(66, 127, 204);
/* oklch */ color: oklch(59.3% 0.134 255.4);

Tailwind

colors: {
  custom: {
    50: '#85a3dc',
    500: '#427fcc',
    950: '#000000',
  },
}

SCSS

$custom: #427fcc;
$custom-light: #85a3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#427fcc",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 204
  },
  "hsl": {
    "h": 213.478,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.59258,
    "c": 0.13433,
    "h": 255.4
  },
  "luminance": 0.20697
}

Semantic roles & 50–950 ramp

primary

#427FCC

secondary

#D3B897

accent

#9D47E1

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #427FCC

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

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