#427FBB#427FBB

#427FBB is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.3% C 0.112 H 250.0°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#427FBB
RGB	rgb(66, 127, 187)
HSL	hsl(210, 48%, 50%)
HSV	hsv(210, 65%, 73%)
CMYK	cmyk(64.7%, 32.1%, 0%, 26.7%)
CIE-LAB	lab(51.75, -0.69, -37.34)
CIE-LCH	lch(51.75, 37.35, 268.94°)
OKLab	oklab(58.3% -0.0385 -0.1056)
OKLCH	oklch(58.3% 0.112 250)
XYZ	xyz(18.8025, 19.9230, 49.8587)
Luminance	0.1993 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FBB #BB7E42

analogous

#42BBBB #427FBB #4243BB

triadic

#427FBB #BB427F #7FBB42

tetradic

#427FBB #BB42BB #BB7E42 #43BB42

square

#427FBB #BB42BB #BB7E42 #43BB42

split-complementary

#427FBB #BB4243 #BBBB42

monochromatic

#224261 #32608E #427FBB #6E9DCC #9CBCDC

Accessibility & contrast

On white

4.21

#427FBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#427FBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FBB

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FBB	#FFFFFF	#000000	##000000
##427FBB	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6582BE

Deuteranopia (green-blind)

#5476BA

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427fbb;
/* rgb */ color: rgb(66, 127, 187);
/* oklch */ color: oklch(58.3% 0.112 250.0);

Tailwind

colors: {
  custom: {
    50: '#82a3cf',
    500: '#427fbb',
    950: '#000000',
  },
}

SCSS

$custom: #427fbb;
$custom-light: #82a3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#427fbb",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 187
  },
  "hsl": {
    "h": 209.752,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.583,
    "c": 0.11239,
    "h": 250
  },
  "luminance": 0.19925
}

Semantic roles & 50–950 ramp

primary

#427FBB

secondary

#C8AC91

accent

#9350D7

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #427FBB

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

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