#427EC9#427EC9

#427EC9 is a mid, vivid cyan. Relative luminance 0.203; OKLCH L 58.9% C 0.131 H 255.1°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#427EC9
RGB	rgb(66, 126, 201)
HSL	hsl(213, 56%, 52%)
HSV	hsv(213, 67%, 79%)
CMYK	cmyk(67.2%, 37.3%, 0%, 21.2%)
CIE-LAB	lab(52.17, 4.78, -44.68)
CIE-LCH	lch(52.17, 44.94, 276.11°)
OKLab	oklab(58.86% -0.0337 -0.127)
OKLCH	oklch(58.86% 0.131 255.1)
XYZ	xyz(20.2464, 20.2949, 58.0973)
Luminance	0.2030 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427EC9 #C98D42

analogous

#42C2C9 #427EC9 #4942C9

triadic

#427EC9 #C9427E #7EC942

tetradic

#427EC9 #C942C2 #C98D42 #42C949

square

#427EC9 #C942C2 #C98D42 #42C949

split-complementary

#427EC9 #C94942 #C2C942

monochromatic

#204470 #2E61A0 #427EC9 #729ED7 #A1BFE4

Accessibility & contrast

On white

4.15

#427EC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#427EC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427EC9

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427EC9	#FFFFFF	#000000	##000000
##427EC9	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D83CC

Deuteranopia (green-blind)

#4977C7

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #427ec9;
/* rgb */ color: rgb(66, 126, 201);
/* oklch */ color: oklch(58.9% 0.131 255.1);

Tailwind

colors: {
  custom: {
    50: '#84a3da',
    500: '#427ec9',
    950: '#000000',
  },
}

SCSS

$custom: #427ec9;
$custom-light: #84a3da;
$custom-dark: #000000;

JSON

{
  "hex": "#427ec9",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 201
  },
  "hsl": {
    "h": 213.333,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.5886,
    "c": 0.13144,
    "h": 255.1
  },
  "luminance": 0.20297
}

Semantic roles & 50–950 ramp

primary

#427EC9

secondary

#D1B796

accent

#9C49DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #427EC9

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

Preview Lab → · Contrast checker → · Palette generator →