#4F55BB#4F55BB

#4F55BB is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.1% C 0.158 H 276.5°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#4F55BB
RGB	rgb(79, 85, 187)
HSL	hsl(237, 44%, 52%)
HSV	hsv(237, 58%, 73%)
CMYK	cmyk(57.8%, 54.5%, 0%, 26.7%)
CIE-LAB	lab(40.81, 27.95, -54.75)
CIE-LCH	lch(40.81, 61.47, 297.04°)
OKLab	oklab(50.08% 0.018 -0.1569)
OKLCH	oklch(50.08% 0.158 276.5)
XYZ	xyz(15.4397, 11.7460, 48.4577)
Luminance	0.1175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F55BB #BBB54F

analogous

#4F8BBB #4F55BB #7F4FBB

triadic

#4F55BB #BB4F55 #55BB4F

tetradic

#4F55BB #BB4F8B #BBB54F #4FBB7F

square

#4F55BB #BB4F8B #BBB54F #4FBB7F

split-complementary

#4F55BB #BB7F4F #8BBB4F

monochromatic

#282C68 #393E94 #4F55BB #7B80CC #A7AADD

Accessibility & contrast

On white

6.27

#4F55BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#4F55BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F55BB

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F55BB	#FFFFFF	#000000	##FFFFFF
##4F55BB	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1165BF

Deuteranopia (green-blind)

#005CB9

Tritanopia (blue-blind)

#086D80

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4f55bb;
/* rgb */ color: rgb(79, 85, 187);
/* oklch */ color: oklch(50.1% 0.158 276.5);

Tailwind

colors: {
  custom: {
    50: '#8a84d0',
    500: '#4f55bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f55bb;
$custom-light: #8a84d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f55bb",
  "rgb": {
    "r": 79,
    "g": 85,
    "b": 187
  },
  "hsl": {
    "h": 236.667,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.50075,
    "c": 0.15789,
    "h": 276.5
  },
  "luminance": 0.11747
}

Semantic roles & 50–950 ramp

primary

#4F55BB

secondary

#CAC89B

accent

#CD54D4

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0D0B14

muted

#7D7C82

Preview Lab

Preview with #4F55BB

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

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