#427CA3#427CA3

#427CA3 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.4% C 0.086 H 240.1°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#427CA3
RGB	rgb(66, 124, 163)
HSL	hsl(204, 42%, 45%)
HSV	hsv(204, 60%, 64%)
CMYK	cmyk(59.5%, 23.9%, 0%, 36.1%)
CIE-LAB	lab(49.76, -7.00, -26.58)
CIE-LCH	lch(49.76, 27.49, 255.25°)
OKLab	oklab(56.37% -0.0428 -0.0745)
OKLCH	oklch(56.37% 0.086 240.1)
XYZ	xyz(16.0628, 18.2164, 37.3129)
Luminance	0.1822 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CA3 #A36942

analogous

#42A39A #427CA3 #424BA3

triadic

#427CA3 #A3427C #7CA342

tetradic

#427CA3 #9A42A3 #A36942 #4BA342

square

#427CA3 #9A42A3 #A36942 #4BA342

split-complementary

#427CA3 #A3424B #A39A42

monochromatic

#1F3A4C #305B77 #427CA3 #639AC0 #8EB6D1

Accessibility & contrast

On white

4.52

#427CA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#427CA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CA3

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CA3	#FFFFFF	#000000	##000000
##427CA3	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7CA5

Deuteranopia (green-blind)

#5D72A2

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #427ca3;
/* rgb */ color: rgb(66, 124, 163);
/* oklch */ color: oklch(56.4% 0.086 240.1);

Tailwind

colors: {
  custom: {
    50: '#7fa1be',
    500: '#427ca3',
    950: '#000000',
  },
}

SCSS

$custom: #427ca3;
$custom-light: #7fa1be;
$custom-dark: #000000;

JSON

{
  "hex": "#427ca3",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 163
  },
  "hsl": {
    "h": 204.124,
    "s": 42.358,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56367,
    "c": 0.08591,
    "h": 240.1
  },
  "luminance": 0.18218
}

Semantic roles & 50–950 ramp

primary

#427CA3

secondary

#BC9B84

accent

#8856D2

background

#F8F9FB

surface

#EFF2F6

border

#CACCD0

text

#0B0F12

muted

#7C7E81

Preview Lab

Preview with #427CA3

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

Preview Lab → · Contrast checker → · Palette generator →