#427FB1#427FB1

#427FB1 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.8% C 0.100 H 245.5°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#427FB1
RGB	rgb(66, 127, 177)
HSL	hsl(207, 46%, 48%)
HSV	hsv(207, 63%, 69%)
CMYK	cmyk(62.7%, 28.2%, 0%, 30.6%)
CIE-LAB	lab(51.28, -4.09, -32.33)
CIE-LCH	lch(51.28, 32.59, 262.78°)
OKLab	oklab(57.77% -0.0415 -0.091)
OKLCH	oklch(57.77% 0.1 245.5)
XYZ	xyz(17.7690, 19.5096, 44.4158)
Luminance	0.1951 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FB1 #B17442

analogous

#42B1AB #427FB1 #4247B1

triadic

#427FB1 #B1427F #7FB142

tetradic

#427FB1 #AB42B1 #B17442 #47B142

square

#427FB1 #AB42B1 #B17442 #47B142

split-complementary

#427FB1 #B14247 #B1AB42

monochromatic

#213F58 #315F84 #427FB1 #699DC7 #96BAD8

Accessibility & contrast

On white

4.28

#427FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#427FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FB1

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FB1	#FFFFFF	#000000	##000000
##427FB1	1.00	4.28	4.90	4.90
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6980B3

Deuteranopia (green-blind)

#5A75B0

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #427fb1;
/* rgb */ color: rgb(66, 127, 177);
/* oklch */ color: oklch(57.8% 0.100 245.5);

Tailwind

colors: {
  custom: {
    50: '#81a3c8',
    500: '#427fb1',
    950: '#000000',
  },
}

SCSS

$custom: #427fb1;
$custom-light: #81a3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#427fb1",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 177
  },
  "hsl": {
    "h": 207.027,
    "s": 45.679,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57774,
    "c": 0.10006,
    "h": 245.5
  },
  "luminance": 0.19511
}

Semantic roles & 50–950 ramp

primary

#427FB1

secondary

#C3A58B

accent

#8D52D5

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #427FB1

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

Preview Lab → · Contrast checker → · Palette generator →