#4F55CB#4F55CB

#4F55CB is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.3% C 0.180 H 275.8°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#4F55CB
RGB	rgb(79, 85, 203)
HSL	hsl(237, 54%, 55%)
HSV	hsv(237, 61%, 80%)
CMYK	cmyk(61.1%, 58.1%, 0%, 20.4%)
CIE-LAB	lab(41.95, 33.28, -62.19)
CIE-LCH	lch(41.95, 70.54, 298.15°)
OKLab	oklab(51.29% 0.0183 -0.1788)
OKLCH	oklch(51.29% 0.18 275.8)
XYZ	xyz(17.2489, 12.4697, 57.9863)
Luminance	0.1247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F55CB #CBC54F

analogous

#4F93CB #4F55CB #874FCB

triadic

#4F55CB #CB4F55 #55CB4F

tetradic

#4F55CB #CB4F93 #CBC54F #4FCB87

square

#4F55CB #CB4F93 #CBC54F #4FCB87

split-complementary

#4F55CB #CB874F #93CB4F

monochromatic

#24297B #3238AA #4F55CB #7E83D9 #ADB0E7

Accessibility & contrast

On white

6.01

#4F55CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#4F55CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F55CB

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F55CB	#FFFFFF	#000000	##FFFFFF
##4F55CB	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CF

Deuteranopia (green-blind)

#005EC9

Tritanopia (blue-blind)

#007188

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4f55cb;
/* rgb */ color: rgb(79, 85, 203);
/* oklch */ color: oklch(51.3% 0.180 275.8);

Tailwind

colors: {
  custom: {
    50: '#8c85dc',
    500: '#4f55cb',
    950: '#000000',
  },
}

SCSS

$custom: #4f55cb;
$custom-light: #8c85dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4f55cb",
  "rgb": {
    "r": 79,
    "g": 85,
    "b": 203
  },
  "hsl": {
    "h": 237.097,
    "s": 54.386,
    "l": 55.294
  },
  "oklch": {
    "l": 0.51289,
    "c": 0.17969,
    "h": 275.8
  },
  "luminance": 0.12471
}

Semantic roles & 50–950 ramp

primary

#4F55CB

secondary

#D5D2A1

accent

#D74ADE

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4F55CB

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

Preview Lab → · Contrast checker → · Palette generator →