#427DCB#427DCB

#427DCB is a mid, vivid cyan. Relative luminance 0.201; OKLCH L 58.8% C 0.135 H 256.2°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#427DCB
RGB	rgb(66, 125, 203)
HSL	hsl(214, 57%, 53%)
HSV	hsv(214, 67%, 80%)
CMYK	cmyk(67.5%, 38.4%, 0%, 20.4%)
CIE-LAB	lab(51.99, 6.09, -46.11)
CIE-LCH	lch(51.99, 46.51, 277.52°)
OKLab	oklab(58.76% -0.0322 -0.1312)
OKLCH	oklch(58.76% 0.135 256.2)
XYZ	xyz(20.3560, 20.1352, 59.3020)
Luminance	0.2014 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DCB #CB9042

analogous

#42C1CB #427DCB #4C42CB

triadic

#427DCB #CB427D #7DCB42

tetradic

#427DCB #CB42C1 #CB9042 #42CB4C

square

#427DCB #CB42C1 #CB9042 #42CB4C

split-complementary

#427DCB #CB4C42 #C1CB42

monochromatic

#204473 #2D60A3 #427DCB #729ED8 #A2BFE5

Accessibility & contrast

On white

4.18

#427DCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#427DCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DCB

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DCB	#FFFFFF	#000000	##000000
##427DCB	1.00	4.18	5.03	5.03
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A83CE

Deuteranopia (green-blind)

#4576C9

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #427dcb;
/* rgb */ color: rgb(66, 125, 203);
/* oklch */ color: oklch(58.8% 0.135 256.2);

Tailwind

colors: {
  custom: {
    50: '#85a2db',
    500: '#427dcb',
    950: '#000000',
  },
}

SCSS

$custom: #427dcb;
$custom-light: #85a2db;
$custom-dark: #000000;

JSON

{
  "hex": "#427dcb",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 203
  },
  "hsl": {
    "h": 214.161,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.58755,
    "c": 0.13512,
    "h": 256.2
  },
  "luminance": 0.20137
}

Semantic roles & 50–950 ramp

primary

#427DCB

secondary

#D2B997

accent

#9E48E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #427DCB

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

Preview Lab → · Contrast checker → · Palette generator →