#4C63CB#4C63CB

#4C63CB is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.8% C 0.163 H 270.6°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#4C63CB
RGB	rgb(76, 99, 203)
HSL	hsl(229, 55%, 55%)
HSV	hsv(229, 63%, 80%)
CMYK	cmyk(62.6%, 51.2%, 0%, 20.4%)
CIE-LAB	lab(45.32, 23.99, -56.76)
CIE-LCH	lch(45.32, 61.62, 292.91°)
OKLab	oklab(53.76% 0.0018 -0.1627)
OKLCH	oklch(53.76% 0.163 270.6)
XYZ	xyz(18.2182, 14.7704, 58.3792)
Luminance	0.1477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C63CB #CBB44C

analogous

#4CA2CB #4C63CB #754CCB

triadic

#4C63CB #CB4C63 #63CB4C

tetradic

#4C63CB #CB4CA2 #CBB44C #4CCB75

square

#4C63CB #CB4CA2 #CBB44C #4CCB75

split-complementary

#4C63CB #CB754C #A2CB4C

monochromatic

#233379 #3147A9 #4C63CB #7B8CD9 #ABB6E7

Accessibility & contrast

On white

5.31

#4C63CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#4C63CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4C63CB

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C63CB	#FFFFFF	#000000	##FFFFFF
##4C63CB	1.00	5.31	3.95	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2771CF

Deuteranopia (green-blind)

#0066C9

Tritanopia (blue-blind)

#007B8D

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #4c63cb;
/* rgb */ color: rgb(76, 99, 203);
/* oklch */ color: oklch(53.8% 0.163 270.6);

Tailwind

colors: {
  custom: {
    50: '#8a8fdb',
    500: '#4c63cb',
    950: '#000000',
  },
}

SCSS

$custom: #4c63cb;
$custom-light: #8a8fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#4c63cb",
  "rgb": {
    "r": 76,
    "g": 99,
    "b": 203
  },
  "hsl": {
    "h": 229.134,
    "s": 54.978,
    "l": 54.706
  },
  "oklch": {
    "l": 0.5376,
    "c": 0.1627,
    "h": 270.6
  },
  "luminance": 0.14772
}

Semantic roles & 50–950 ramp

primary

#4C63CB

secondary

#D4CA9F

accent

#C349DE

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #4C63CB

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

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