#427FB5#427FB5

#427FB5 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 58.0% C 0.105 H 247.4°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#427FB5
RGB	rgb(66, 127, 181)
HSL	hsl(208, 47%, 48%)
HSV	hsv(208, 64%, 71%)
CMYK	cmyk(63.5%, 29.8%, 0%, 29%)
CIE-LAB	lab(51.46, -2.74, -34.35)
CIE-LCH	lch(51.46, 34.45, 265.44°)
OKLab	oklab(57.98% -0.0403 -0.0969)
OKLCH	oklch(57.98% 0.105 247.4)
XYZ	xyz(18.1735, 19.6714, 46.5463)
Luminance	0.1967 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FB5 #B57842

analogous

#42B5B1 #427FB5 #4245B5

triadic

#427FB5 #B5427F #7FB542

tetradic

#427FB5 #B142B5 #B57842 #45B542

square

#427FB5 #B142B5 #B57842 #45B542

split-complementary

#427FB5 #B54245 #B5B142

monochromatic

#21405B #326088 #427FB5 #6B9DC9 #98BBD9

Accessibility & contrast

On white

4.26

#427FB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#427FB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FB5

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FB5	#FFFFFF	#000000	##000000
##427FB5	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6781B7

Deuteranopia (green-blind)

#5876B4

Tritanopia (blue-blind)

#008C92

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427fb5;
/* rgb */ color: rgb(66, 127, 181);
/* oklch */ color: oklch(58.0% 0.105 247.4);

Tailwind

colors: {
  custom: {
    50: '#81a3cb',
    500: '#427fb5',
    950: '#000000',
  },
}

SCSS

$custom: #427fb5;
$custom-light: #81a3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#427fb5",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 181
  },
  "hsl": {
    "h": 208.174,
    "s": 46.559,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57981,
    "c": 0.10491,
    "h": 247.4
  },
  "luminance": 0.19673
}

Semantic roles & 50–950 ramp

primary

#427FB5

secondary

#C5A88E

accent

#9052D6

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #427FB5

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

Preview Lab → · Contrast checker → · Palette generator →