#427FB8#427FB8

#427FB8 is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 58.1% C 0.109 H 248.8°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#427FB8
RGB	rgb(66, 127, 184)
HSL	hsl(209, 47%, 49%)
HSV	hsv(209, 64%, 72%)
CMYK	cmyk(64.1%, 31%, 0%, 27.8%)
CIE-LAB	lab(51.61, -1.72, -35.85)
CIE-LCH	lch(51.61, 35.89, 267.26°)
OKLab	oklab(58.14% -0.0394 -0.1013)
OKLCH	oklch(58.14% 0.109 248.8)
XYZ	xyz(18.4847, 19.7959, 48.1849)
Luminance	0.1980 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FB8 #B87B42

analogous

#42B8B6 #427FB8 #4244B8

triadic

#427FB8 #B8427F #7FB842

tetradic

#427FB8 #B642B8 #B87B42 #44B842

square

#427FB8 #B642B8 #B87B42 #44B842

split-complementary

#427FB8 #B84244 #B8B642

monochromatic

#22415E #32608B #427FB8 #6D9DCB #9ABBDB

Accessibility & contrast

On white

4.23

#427FB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#427FB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FB8

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FB8	#FFFFFF	#000000	##000000
##427FB8	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6681BA

Deuteranopia (green-blind)

#5676B7

Tritanopia (blue-blind)

#008C93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427fb8;
/* rgb */ color: rgb(66, 127, 184);
/* oklch */ color: oklch(58.1% 0.109 248.8);

Tailwind

colors: {
  custom: {
    50: '#82a3cd',
    500: '#427fb8',
    950: '#000000',
  },
}

SCSS

$custom: #427fb8;
$custom-light: #82a3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#427fb8",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 184
  },
  "hsl": {
    "h": 208.983,
    "s": 47.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.58139,
    "c": 0.10863,
    "h": 248.8
  },
  "luminance": 0.19798
}

Semantic roles & 50–950 ramp

primary

#427FB8

secondary

#C7AA8F

accent

#9251D7

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #427FB8

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

Preview Lab → · Contrast checker → · Palette generator →