#4C66CF#4C66CF

#4C66CF is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.6% C 0.164 H 269.8°. Best body text is #FFFFFF at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#4C66CF
RGB	rgb(76, 102, 207)
HSL	hsl(228, 58%, 55%)
HSV	hsv(228, 63%, 81%)
CMYK	cmyk(63.3%, 50.7%, 0%, 18.8%)
CIE-LAB	lab(46.37, 23.47, -57.36)
CIE-LCH	lch(46.37, 61.98, 292.26°)
OKLab	oklab(54.64% -0.0007 -0.1644)
OKLCH	oklch(54.64% 0.164 269.8)
XYZ	xyz(18.9905, 15.5426, 61.0186)
Luminance	0.1554 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C66CF #CFB54C

analogous

#4CA7CF #4C66CF #744CCF

triadic

#4C66CF #CF4C66 #66CF4C

tetradic

#4C66CF #CF4CA7 #CFB54C #4CCF74

square

#4C66CF #CF4CA7 #CFB54C #4CCF74

split-complementary

#4C66CF #CF744C #A7CF4C

monochromatic

#22347F #2F48AF #4C66CF #7C8FDC #ADB8E9

Accessibility & contrast

On white

5.11

#4C66CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#4C66CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4C66CF

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C66CF	#FFFFFF	#000000	##FFFFFF
##4C66CF	1.00	5.11	4.11	5.11
#FFFFFF	5.11	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A74D3

Deuteranopia (green-blind)

#0068CD

Tritanopia (blue-blind)

#007E91

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #4c66cf;
/* rgb */ color: rgb(76, 102, 207);
/* oklch */ color: oklch(54.6% 0.164 269.8);

Tailwind

colors: {
  custom: {
    50: '#8b91de',
    500: '#4c66cf',
    950: '#000000',
  },
}

SCSS

$custom: #4c66cf;
$custom-light: #8b91de;
$custom-dark: #000000;

JSON

{
  "hex": "#4c66cf",
  "rgb": {
    "r": 76,
    "g": 102,
    "b": 207
  },
  "hsl": {
    "h": 228.092,
    "s": 57.709,
    "l": 55.49
  },
  "oklch": {
    "l": 0.54639,
    "c": 0.16442,
    "h": 269.8
  },
  "luminance": 0.15544
}

Semantic roles & 50–950 ramp

primary

#4C66CF

secondary

#D7CCA0

accent

#C247E1

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #4C66CF

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

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