#427DB3#427DB3

#427DB3 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.4% C 0.104 H 248.2°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#427DB3
RGB	rgb(66, 125, 179)
HSL	hsl(209, 46%, 48%)
HSV	hsv(209, 63%, 70%)
CMYK	cmyk(63.1%, 30.2%, 0%, 29.8%)
CIE-LAB	lab(50.78, -2.24, -34.27)
CIE-LCH	lch(50.78, 34.34, 266.27°)
OKLab	oklab(57.41% -0.0387 -0.0967)
OKLCH	oklch(57.41% 0.104 248.2)
XYZ	xyz(17.7141, 19.0784, 45.3881)
Luminance	0.1908 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DB3 #B37842

analogous

#42B3B0 #427DB3 #4244B3

triadic

#427DB3 #B3427D #7DB342

tetradic

#427DB3 #B042B3 #B37842 #44B342

square

#427DB3 #B042B3 #B37842 #44B342

split-complementary

#427DB3 #B34244 #B3B042

monochromatic

#213F5A #325E86 #427DB3 #6A9BC8 #97B9D9

Accessibility & contrast

On white

4.36

#427DB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#427DB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DB3

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DB3	#FFFFFF	#000000	##000000
##427DB3	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667FB5

Deuteranopia (green-blind)

#5674B2

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427db3;
/* rgb */ color: rgb(66, 125, 179);
/* oklch */ color: oklch(57.4% 0.104 248.2);

Tailwind

colors: {
  custom: {
    50: '#81a2ca',
    500: '#427db3',
    950: '#000000',
  },
}

SCSS

$custom: #427db3;
$custom-light: #81a2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#427db3",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 179
  },
  "hsl": {
    "h": 208.673,
    "s": 46.122,
    "l": 48.039
  },
  "oklch": {
    "l": 0.57411,
    "c": 0.10413,
    "h": 248.2
  },
  "luminance": 0.1908
}

Semantic roles & 50–950 ramp

primary

#427DB3

secondary

#C4A78C

accent

#9152D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #427DB3

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

Preview Lab → · Contrast checker → · Palette generator →