#427FCF#427FCF

#427FCF is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.4% C 0.138 H 256.1°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#427FCF
RGB	rgb(66, 127, 207)
HSL	hsl(214, 59%, 54%)
HSV	hsv(214, 68%, 81%)
CMYK	cmyk(68.1%, 38.6%, 0%, 18.8%)
CIE-LAB	lab(52.77, 6.29, -47.13)
CIE-LCH	lch(52.77, 47.55, 277.60°)
OKLab	oklab(59.44% -0.0333 -0.1342)
OKLCH	oklch(59.44% 0.138 256.1)
XYZ	xyz(21.0945, 20.8398, 61.9302)
Luminance	0.2084 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FCF #CF9242

analogous

#42C5CF #427FCF #4B42CF

triadic

#427FCF #CF427F #7FCF42

tetradic

#427FCF #CF42C5 #CF9242 #42CF4B

square

#427FCF #CF42C5 #CF9242 #42CF4B

split-complementary

#427FCF #CF4B42 #C5CF42

monochromatic

#1F4578 #2B61A9 #427FCF #73A0DB #A4C1E8

Accessibility & contrast

On white

4.06

#427FCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#427FCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FCF

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FCF	#FFFFFF	#000000	##000000
##427FCF	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B85D2

Deuteranopia (green-blind)

#4678CD

Tritanopia (blue-blind)

#00929D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427fcf;
/* rgb */ color: rgb(66, 127, 207);
/* oklch */ color: oklch(59.4% 0.138 256.1);

Tailwind

colors: {
  custom: {
    50: '#85a3de',
    500: '#427fcf',
    950: '#000000',
  },
}

SCSS

$custom: #427fcf;
$custom-light: #85a3de;
$custom-dark: #000000;

JSON

{
  "hex": "#427fcf",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 207
  },
  "hsl": {
    "h": 214.043,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.59435,
    "c": 0.13826,
    "h": 256.1
  },
  "luminance": 0.20842
}

Semantic roles & 50–950 ramp

primary

#427FCF

secondary

#D5BA98

accent

#9F45E3

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #427FCF

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

Preview Lab → · Contrast checker → · Palette generator →