#427EA3#427EA3

#427EA3 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.8% C 0.085 H 237.8°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#427EA3
RGB	rgb(66, 126, 163)
HSL	hsl(203, 42%, 45%)
HSV	hsv(203, 60%, 64%)
CMYK	cmyk(59.5%, 22.7%, 0%, 36.1%)
CIE-LAB	lab(50.36, -8.16, -25.65)
CIE-LCH	lch(50.36, 26.91, 252.36°)
OKLab	oklab(56.85% -0.0451 -0.0718)
OKLCH	oklch(56.85% 0.085 237.8)
XYZ	xyz(16.3160, 18.7228, 37.3973)
Luminance	0.1872 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427EA3 #A36742

analogous

#42A398 #427EA3 #424DA3

triadic

#427EA3 #A3427E #7EA342

tetradic

#427EA3 #9842A3 #A36742 #4DA342

square

#427EA3 #9842A3 #A36742 #4DA342

split-complementary

#427EA3 #A3424D #A39842

monochromatic

#1F3B4C #305C77 #427EA3 #639CC0 #8EB8D1

Accessibility & contrast

On white

4.43

#427EA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#427EA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427EA3

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427EA3	#FFFFFF	#000000	##000000
##427EA3	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7DA5

Deuteranopia (green-blind)

#6073A2

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #427ea3;
/* rgb */ color: rgb(66, 126, 163);
/* oklch */ color: oklch(56.8% 0.085 237.8);

Tailwind

colors: {
  custom: {
    50: '#7fa3be',
    500: '#427ea3',
    950: '#000000',
  },
}

SCSS

$custom: #427ea3;
$custom-light: #7fa3be;
$custom-dark: #000000;

JSON

{
  "hex": "#427ea3",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 163
  },
  "hsl": {
    "h": 202.887,
    "s": 42.358,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56845,
    "c": 0.08477,
    "h": 237.8
  },
  "luminance": 0.18724
}

Semantic roles & 50–950 ramp

primary

#427EA3

secondary

#BC9A84

accent

#8556D2

background

#F8FAFB

surface

#EFF3F6

border

#CACDD0

text

#0B0F12

muted

#7C7F81

Preview Lab

Preview with #427EA3

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

Preview Lab → · Contrast checker → · Palette generator →