#4F57BB#4F57BB

#4F57BB is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.5% C 0.155 H 275.9°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#4F57BB
RGB	rgb(79, 87, 187)
HSL	hsl(236, 44%, 52%)
HSV	hsv(236, 58%, 73%)
CMYK	cmyk(57.8%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(41.32, 26.69, -53.93)
CIE-LCH	lch(41.32, 60.17, 296.33°)
OKLab	oklab(50.46% 0.0159 -0.1544)
OKLCH	oklch(50.46% 0.155 275.9)
XYZ	xyz(15.5994, 12.0654, 48.5109)
Luminance	0.1207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F57BB #BBB34F

analogous

#4F8DBB #4F57BB #7D4FBB

triadic

#4F57BB #BB4F57 #57BB4F

tetradic

#4F57BB #BB4F8D #BBB34F #4FBB7D

square

#4F57BB #BB4F8D #BBB34F #4FBB7D

split-complementary

#4F57BB #BB7D4F #8DBB4F

monochromatic

#282D68 #394094 #4F57BB #7B81CC #A7ABDD

Accessibility & contrast

On white

6.15

#4F57BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#4F57BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F57BB

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F57BB	#FFFFFF	#000000	##FFFFFF
##4F57BB	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A66BE

Deuteranopia (green-blind)

#005DB9

Tritanopia (blue-blind)

#076E80

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4f57bb;
/* rgb */ color: rgb(79, 87, 187);
/* oklch */ color: oklch(50.5% 0.155 275.9);

Tailwind

colors: {
  custom: {
    50: '#8a86d0',
    500: '#4f57bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f57bb;
$custom-light: #8a86d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f57bb",
  "rgb": {
    "r": 79,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 235.556,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.50458,
    "c": 0.15524,
    "h": 275.9
  },
  "luminance": 0.12067
}

Semantic roles & 50–950 ramp

primary

#4F57BB

secondary

#CAC79B

accent

#CA54D4

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #4F57BB

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

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