#427D8A#427D8A

#427D8A is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.5% C 0.065 H 213.7°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#427D8A
RGB	rgb(66, 125, 138)
HSL	hsl(191, 35%, 40%)
HSV	hsv(191, 52%, 54%)
CMYK	cmyk(52.2%, 9.4%, 0%, 45.9%)
CIE-LAB	lab(49.08, -15.42, -12.98)
CIE-LCH	lch(49.08, 20.15, 220.09°)
OKLab	oklab(55.5% -0.0537 -0.0359)
OKLCH	oklch(55.5% 0.065 213.7)
XYZ	xyz(14.1661, 17.6592, 26.7019)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427D8A #8A4F42

analogous

#428A73 #427D8A #42598A

triadic

#427D8A #8A427D #7D8A42

tetradic

#427D8A #73428A #8A4F42 #598A42

square

#427D8A #73428A #8A4F42 #598A42

split-complementary

#427D8A #8A4259 #8A7342

monochromatic

#1A3237 #2E5861 #427D8A #59A0B0 #83B8C4

Accessibility & contrast

On white

4.63

#427D8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#427D8A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #427D8A

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427D8A	#FFFFFF	#000000	##FFFFFF
##427D8A	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#73798B

Deuteranopia (green-blind)

#68718A

Tritanopia (blue-blind)

#148281

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #427d8a;
/* rgb */ color: rgb(66, 125, 138);
/* oklch */ color: oklch(55.5% 0.065 213.7);

Tailwind

colors: {
  custom: {
    50: '#7ca2ac',
    500: '#427d8a',
    950: '#000000',
  },
}

SCSS

$custom: #427d8a;
$custom-light: #7ca2ac;
$custom-dark: #000000;

JSON

{
  "hex": "#427d8a",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 138
  },
  "hsl": {
    "h": 190.833,
    "s": 35.294,
    "l": 40
  },
  "oklch": {
    "l": 0.55502,
    "c": 0.0646,
    "h": 213.7
  },
  "luminance": 0.1766
}

Semantic roles & 50–950 ramp

primary

#427D8A

secondary

#AE8379

accent

#705CCB

background

#F7FAFA

surface

#EEF3F4

border

#C9CDCE

text

#0A0F10

muted

#7C7F7F

Preview Lab

Preview with #427D8A

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

Preview Lab → · Contrast checker → · Palette generator →