#4B63CB#4B63CB

#4B63CB is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.7% C 0.163 H 270.3°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#4B63CB
RGB	rgb(75, 99, 203)
HSL	hsl(229, 55%, 55%)
HSV	hsv(229, 63%, 80%)
CMYK	cmyk(63.1%, 51.2%, 0%, 20.4%)
CIE-LAB	lab(45.26, 23.81, -56.85)
CIE-LCH	lch(45.26, 61.64, 292.73°)
OKLab	oklab(53.7% 0.0008 -0.163)
OKLCH	oklch(53.7% 0.163 270.3)
XYZ	xyz(18.1393, 14.7298, 58.3755)
Luminance	0.1473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B63CB #CBB34B

analogous

#4BA3CB #4B63CB #734BCB

triadic

#4B63CB #CB4B63 #63CB4B

tetradic

#4B63CB #CB4BA3 #CBB34B #4BCB73

square

#4B63CB #CB4BA3 #CBB34B #4BCB73

split-complementary

#4B63CB #CB734B #A3CB4B

monochromatic

#233379 #3147A8 #4B63CB #7A8CD9 #AAB5E6

Accessibility & contrast

On white

5.32

#4B63CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#4B63CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B63CB

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B63CB	#FFFFFF	#000000	##FFFFFF
##4B63CB	1.00	5.32	3.95	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2671CF

Deuteranopia (green-blind)

#0066C9

Tritanopia (blue-blind)

#007B8D

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #4b63cb;
/* rgb */ color: rgb(75, 99, 203);
/* oklch */ color: oklch(53.7% 0.163 270.3);

Tailwind

colors: {
  custom: {
    50: '#8a8fdb',
    500: '#4b63cb',
    950: '#000000',
  },
}

SCSS

$custom: #4b63cb;
$custom-light: #8a8fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#4b63cb",
  "rgb": {
    "r": 75,
    "g": 99,
    "b": 203
  },
  "hsl": {
    "h": 228.75,
    "s": 55.172,
    "l": 54.51
  },
  "oklch": {
    "l": 0.53703,
    "c": 0.16299,
    "h": 270.3
  },
  "luminance": 0.14731
}

Semantic roles & 50–950 ramp

primary

#4B63CB

secondary

#D4CA9E

accent

#C349DF

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #4B63CB

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

Preview Lab → · Contrast checker → · Palette generator →