#427B8A#427B8A

#427B8A is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.0% C 0.064 H 216.9°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#427B8A
RGB	rgb(66, 123, 138)
HSL	hsl(193, 35%, 40%)
HSV	hsv(193, 52%, 54%)
CMYK	cmyk(52.2%, 10.9%, 0%, 45.9%)
CIE-LAB	lab(48.46, -14.31, -13.92)
CIE-LCH	lch(48.46, 19.97, 224.20°)
OKLab	oklab(55.01% -0.0513 -0.0385)
OKLCH	oklch(55.01% 0.064 216.9)
XYZ	xyz(13.9154, 17.1580, 26.6183)
Luminance	0.1716 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427B8A #8A5142

analogous

#428A75 #427B8A #42578A

triadic

#427B8A #8A427B #7B8A42

tetradic

#427B8A #75428A #8A5142 #578A42

square

#427B8A #75428A #8A5142 #578A42

split-complementary

#427B8A #8A4257 #8A7542

monochromatic

#1A3137 #2E5661 #427B8A #599EB0 #83B6C4

Accessibility & contrast

On white

4.74

#427B8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#427B8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #427B8A

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427B8A	#FFFFFF	#000000	##FFFFFF
##427B8A	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#71788B

Deuteranopia (green-blind)

#66708A

Tritanopia (blue-blind)

#168080

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #427b8a;
/* rgb */ color: rgb(66, 123, 138);
/* oklch */ color: oklch(55.0% 0.064 216.9);

Tailwind

colors: {
  custom: {
    50: '#7ca1ac',
    500: '#427b8a',
    950: '#000000',
  },
}

SCSS

$custom: #427b8a;
$custom-light: #7ca1ac;
$custom-dark: #000000;

JSON

{
  "hex": "#427b8a",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 138
  },
  "hsl": {
    "h": 192.5,
    "s": 35.294,
    "l": 40
  },
  "oklch": {
    "l": 0.55005,
    "c": 0.06411,
    "h": 216.9
  },
  "luminance": 0.17159
}

Semantic roles & 50–950 ramp

primary

#427B8A

secondary

#AE8479

accent

#745CCB

background

#F7F9FA

surface

#EEF2F4

border

#C9CCCE

text

#0A0F10

muted

#7C7E7F

Preview Lab

Preview with #427B8A

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

Preview Lab → · Contrast checker → · Palette generator →