#427BC3#427BC3

#427BC3 is a mid, vivid cyan. Relative luminance 0.193; OKLCH L 57.8% C 0.127 H 255.3°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#427BC3
RGB	rgb(66, 123, 195)
HSL	hsl(213, 52%, 51%)
HSV	hsv(213, 66%, 76%)
CMYK	cmyk(66.2%, 36.9%, 0%, 23.5%)
CIE-LAB	lab(50.99, 4.49, -43.12)
CIE-LCH	lch(50.99, 43.36, 275.95°)
OKLab	oklab(57.84% -0.0322 -0.1225)
OKLCH	oklch(57.84% 0.127 255.3)
XYZ	xyz(19.1765, 19.2624, 54.3266)
Luminance	0.1926 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BC3 #C38A42

analogous

#42BBC3 #427BC3 #4942C3

triadic

#427BC3 #C3427B #7BC342

tetradic

#427BC3 #C342BB #C38A42 #42C349

square

#427BC3 #C342BB #C38A42 #42C349

split-complementary

#427BC3 #C34942 #BBC342

monochromatic

#214169 #305E98 #427BC3 #709BD2 #9FBCE0

Accessibility & contrast

On white

4.33

#427BC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#427BC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BC3

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BC3	#FFFFFF	#000000	##000000
##427BC3	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B80C6

Deuteranopia (green-blind)

#4974C2

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427bc3;
/* rgb */ color: rgb(66, 123, 195);
/* oklch */ color: oklch(57.8% 0.127 255.3);

Tailwind

colors: {
  custom: {
    50: '#83a0d5',
    500: '#427bc3',
    950: '#000000',
  },
}

SCSS

$custom: #427bc3;
$custom-light: #83a0d5;
$custom-dark: #000000;

JSON

{
  "hex": "#427bc3",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 195
  },
  "hsl": {
    "h": 213.488,
    "s": 51.807,
    "l": 51.176
  },
  "oklch": {
    "l": 0.5784,
    "c": 0.12667,
    "h": 255.3
  },
  "luminance": 0.19264
}

Semantic roles & 50–950 ramp

primary

#427BC3

secondary

#CDB494

accent

#9C4DDB

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #427BC3

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

Preview Lab → · Contrast checker → · Palette generator →