#427FCE#427FCE

#427FCE is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.4% C 0.137 H 255.8°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#427FCE
RGB	rgb(66, 127, 206)
HSL	hsl(214, 59%, 53%)
HSV	hsv(214, 68%, 81%)
CMYK	cmyk(68%, 38.3%, 0%, 19.2%)
CIE-LAB	lab(52.72, 5.93, -46.65)
CIE-LCH	lch(52.72, 47.03, 277.25°)
OKLab	oklab(59.38% -0.0335 -0.1328)
OKLCH	oklch(59.38% 0.137 255.8)
XYZ	xyz(20.9727, 20.7911, 61.2883)
Luminance	0.2079 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FCE #CE9142

analogous

#42C5CE #427FCE #4B42CE

triadic

#427FCE #CE427F #7FCE42

tetradic

#427FCE #CE42C5 #CE9142 #42CE4B

square

#427FCE #CE42C5 #CE9142 #42CE4B

split-complementary

#427FCE #CE4B42 #C5CE42

monochromatic

#1F4577 #2B61A7 #427FCE #73A0DB #A3C1E7

Accessibility & contrast

On white

4.07

#427FCE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#427FCE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FCE

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FCE	#FFFFFF	#000000	##000000
##427FCE	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B85D1

Deuteranopia (green-blind)

#4678CC

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427fce;
/* rgb */ color: rgb(66, 127, 206);
/* oklch */ color: oklch(59.4% 0.137 255.8);

Tailwind

colors: {
  custom: {
    50: '#85a3dd',
    500: '#427fce',
    950: '#000000',
  },
}

SCSS

$custom: #427fce;
$custom-light: #85a3dd;
$custom-dark: #000000;

JSON

{
  "hex": "#427fce",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 206
  },
  "hsl": {
    "h": 213.857,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.59376,
    "c": 0.13695,
    "h": 255.8
  },
  "luminance": 0.20793
}

Semantic roles & 50–950 ramp

primary

#427FCE

secondary

#D4BA98

accent

#9E46E2

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #427FCE

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

Preview Lab → · Contrast checker → · Palette generator →