#4B55CB#4B55CB

#4B55CB is a mid, vivid blue. Relative luminance 0.123; OKLCH L 51.0% C 0.181 H 274.4°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#4B55CB
RGB	rgb(75, 85, 203)
HSL	hsl(235, 55%, 55%)
HSV	hsv(235, 63%, 80%)
CMYK	cmyk(63.1%, 58.1%, 0%, 20.4%)
CIE-LAB	lab(41.69, 32.62, -62.63)
CIE-LCH	lch(41.69, 70.61, 297.52°)
OKLab	oklab(51.03% 0.0138 -0.1801)
OKLCH	oklch(51.03% 0.181 274.4)
XYZ	xyz(16.9261, 12.3032, 57.9711)
Luminance	0.1231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B55CB #CBC14B

analogous

#4B95CB #4B55CB #814BCB

triadic

#4B55CB #CB4B55 #55CB4B

tetradic

#4B55CB #CB4B95 #CBC14B #4BCB81

square

#4B55CB #CB4B95 #CBC14B #4BCB81

split-complementary

#4B55CB #CB814B #95CB4B

monochromatic

#232A79 #313AA8 #4B55CB #7A82D9 #AAAFE6

Accessibility & contrast

On white

6.07

#4B55CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#4B55CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B55CB

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B55CB	#FFFFFF	#000000	##FFFFFF
##4B55CB	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CF

Deuteranopia (green-blind)

#005DC9

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4b55cb;
/* rgb */ color: rgb(75, 85, 203);
/* oklch */ color: oklch(51.0% 0.181 274.4);

Tailwind

colors: {
  custom: {
    50: '#8a84dc',
    500: '#4b55cb',
    950: '#000000',
  },
}

SCSS

$custom: #4b55cb;
$custom-light: #8a84dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4b55cb",
  "rgb": {
    "r": 75,
    "g": 85,
    "b": 203
  },
  "hsl": {
    "h": 235.313,
    "s": 55.172,
    "l": 54.51
  },
  "oklch": {
    "l": 0.51029,
    "c": 0.18067,
    "h": 274.4
  },
  "luminance": 0.12305
}

Semantic roles & 50–950 ramp

primary

#4B55CB

secondary

#D4D09E

accent

#D349DF

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4B55CB

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

Preview Lab → · Contrast checker → · Palette generator →