#427CC9#427CC9

#427CC9 is a mid, vivid cyan. Relative luminance 0.198; OKLCH L 58.4% C 0.134 H 256.3°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#427CC9
RGB	rgb(66, 124, 201)
HSL	hsl(214, 56%, 52%)
HSV	hsv(214, 67%, 79%)
CMYK	cmyk(67.2%, 38.3%, 0%, 21.2%)
CIE-LAB	lab(51.60, 5.99, -45.59)
CIE-LCH	lch(51.60, 45.98, 277.49°)
OKLab	oklab(58.41% -0.0317 -0.1297)
OKLCH	oklch(58.41% 0.134 256.3)
XYZ	xyz(19.9932, 19.7886, 58.0129)
Luminance	0.1979 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CC9 #C98F42

analogous

#42C0C9 #427CC9 #4B42C9

triadic

#427CC9 #C9427C #7CC942

tetradic

#427CC9 #C942C0 #C98F42 #42C94B

square

#427CC9 #C942C0 #C98F42 #42C94B

split-complementary

#427CC9 #C94B42 #C0C942

monochromatic

#204370 #2E5FA0 #427CC9 #729DD7 #A1BEE4

Accessibility & contrast

On white

4.24

#427CC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#427CC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CC9

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CC9	#FFFFFF	#000000	##000000
##427CC9	1.00	4.24	4.96	4.96
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5982CC

Deuteranopia (green-blind)

#4575C7

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427cc9;
/* rgb */ color: rgb(66, 124, 201);
/* oklch */ color: oklch(58.4% 0.134 256.3);

Tailwind

colors: {
  custom: {
    50: '#84a1da',
    500: '#427cc9',
    950: '#000000',
  },
}

SCSS

$custom: #427cc9;
$custom-light: #84a1da;
$custom-dark: #000000;

JSON

{
  "hex": "#427cc9",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 201
  },
  "hsl": {
    "h": 214.222,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.58414,
    "c": 0.13355,
    "h": 256.3
  },
  "luminance": 0.19791
}

Semantic roles & 50–950 ramp

primary

#427CC9

secondary

#D1B896

accent

#9E49DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #427CC9

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

Preview Lab → · Contrast checker → · Palette generator →