#427BA3#427BA3

#427BA3 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.087 H 241.2°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#427BA3
RGB	rgb(66, 123, 163)
HSL	hsl(205, 42%, 45%)
HSV	hsv(205, 60%, 64%)
CMYK	cmyk(59.5%, 24.5%, 0%, 36.1%)
CIE-LAB	lab(49.46, -6.42, -27.05)
CIE-LCH	lch(49.46, 27.80, 256.65°)
OKLab	oklab(56.13% -0.0417 -0.0758)
OKLCH	oklch(56.13% 0.087 241.2)
XYZ	xyz(15.9381, 17.9670, 37.2713)
Luminance	0.1797 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BA3 #A36A42

analogous

#42A39A #427BA3 #424BA3

triadic

#427BA3 #A3427B #7BA342

tetradic

#427BA3 #9A42A3 #A36A42 #4BA342

square

#427BA3 #9A42A3 #A36A42 #4BA342

split-complementary

#427BA3 #A3424B #A39A42

monochromatic

#1F394C #305A77 #427BA3 #6399C0 #8EB6D1

Accessibility & contrast

On white

4.57

#427BA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#427BA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BA3

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BA3	#FFFFFF	#000000	##000000
##427BA3	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#697BA5

Deuteranopia (green-blind)

#5C71A2

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #427ba3;
/* rgb */ color: rgb(66, 123, 163);
/* oklch */ color: oklch(56.1% 0.087 241.2);

Tailwind

colors: {
  custom: {
    50: '#7fa1be',
    500: '#427ba3',
    950: '#000000',
  },
}

SCSS

$custom: #427ba3;
$custom-light: #7fa1be;
$custom-dark: #000000;

JSON

{
  "hex": "#427ba3",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 163
  },
  "hsl": {
    "h": 204.742,
    "s": 42.358,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56128,
    "c": 0.08653,
    "h": 241.2
  },
  "luminance": 0.17969
}

Semantic roles & 50–950 ramp

primary

#427BA3

secondary

#BC9B84

accent

#8956D2

background

#F8F9FB

surface

#EFF2F6

border

#CACCD0

text

#0B0E12

muted

#7C7E81

Preview Lab

Preview with #427BA3

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

Preview Lab → · Contrast checker → · Palette generator →