#427FC9#427FC9

#427FC9 is a mid, vivid cyan. Relative luminance 0.206; OKLCH L 59.1% C 0.130 H 254.6°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#427FC9
RGB	rgb(66, 127, 201)
HSL	hsl(213, 56%, 52%)
HSV	hsv(213, 67%, 79%)
CMYK	cmyk(67.2%, 36.8%, 0%, 21.2%)
CIE-LAB	lab(52.46, 4.17, -44.23)
CIE-LCH	lch(52.46, 44.43, 275.39°)
OKLab	oklab(59.08% -0.0347 -0.1257)
OKLCH	oklch(59.08% 0.13 254.6)
XYZ	xyz(20.3749, 20.5520, 58.1402)
Luminance	0.2055 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FC9 #C98C42

analogous

#42C3C9 #427FC9 #4842C9

triadic

#427FC9 #C9427F #7FC942

tetradic

#427FC9 #C942C3 #C98C42 #42C948

square

#427FC9 #C942C3 #C98C42 #42C948

split-complementary

#427FC9 #C94842 #C3C942

monochromatic

#204470 #2E61A0 #427FC9 #729FD7 #A1BFE4

Accessibility & contrast

On white

4.11

#427FC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#427FC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FC9

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FC9	#FFFFFF	#000000	##000000
##427FC9	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E84CC

Deuteranopia (green-blind)

#4B77C8

Tritanopia (blue-blind)

#00909A

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #427fc9;
/* rgb */ color: rgb(66, 127, 201);
/* oklch */ color: oklch(59.1% 0.130 254.6);

Tailwind

colors: {
  custom: {
    50: '#84a3da',
    500: '#427fc9',
    950: '#000000',
  },
}

SCSS

$custom: #427fc9;
$custom-light: #84a3da;
$custom-dark: #000000;

JSON

{
  "hex": "#427fc9",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 201
  },
  "hsl": {
    "h": 212.889,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.59083,
    "c": 0.1304,
    "h": 254.6
  },
  "luminance": 0.20554
}

Semantic roles & 50–950 ramp

primary

#427FC9

secondary

#D1B696

accent

#9B49DF

background

#F8FAFD

surface

#F0F3FA

border

#CBCDD3

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #427FC9

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

Preview Lab → · Contrast checker → · Palette generator →