#427FC8#427FC8

#427FC8 is a mid, vivid cyan. Relative luminance 0.205; OKLCH L 59.0% C 0.129 H 254.3°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#427FC8
RGB	rgb(66, 127, 200)
HSL	hsl(213, 55%, 52%)
HSV	hsv(213, 67%, 78%)
CMYK	cmyk(67%, 36.5%, 0%, 21.6%)
CIE-LAB	lab(52.40, 3.82, -43.74)
CIE-LCH	lch(52.40, 43.91, 275.00°)
OKLab	oklab(59.03% -0.035 -0.1243)
OKLCH	oklch(59.03% 0.129 254.3)
XYZ	xyz(20.2577, 20.5051, 57.5227)
Luminance	0.2051 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FC8 #C88B42

analogous

#42C2C8 #427FC8 #4842C8

triadic

#427FC8 #C8427F #7FC842

tetradic

#427FC8 #C842C2 #C88B42 #42C848

square

#427FC8 #C842C2 #C88B42 #42C848

split-complementary

#427FC8 #C84842 #C2C842

monochromatic

#20446F #2E619F #427FC8 #719FD6 #A1BFE4

Accessibility & contrast

On white

4.12

#427FC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#427FC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FC8

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FC8	#FFFFFF	#000000	##000000
##427FC8	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F84CB

Deuteranopia (green-blind)

#4B77C7

Tritanopia (blue-blind)

#00909A

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #427fc8;
/* rgb */ color: rgb(66, 127, 200);
/* oklch */ color: oklch(59.0% 0.129 254.3);

Tailwind

colors: {
  custom: {
    50: '#84a3d9',
    500: '#427fc8',
    950: '#000000',
  },
}

SCSS

$custom: #427fc8;
$custom-light: #84a3d9;
$custom-dark: #000000;

JSON

{
  "hex": "#427fc8",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 200
  },
  "hsl": {
    "h": 212.687,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.59026,
    "c": 0.12909,
    "h": 254.3
  },
  "luminance": 0.20507
}

Semantic roles & 50–950 ramp

primary

#427FC8

secondary

#D0B696

accent

#9B4ADE

background

#F8FAFD

surface

#F0F3FA

border

#CBCDD3

text

#0C0F14

muted

#7D7F83

Preview Lab

Preview with #427FC8

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

Preview Lab → · Contrast checker → · Palette generator →