#4F57CD#4F57CD

#4F57CD is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.8% C 0.180 H 275.3°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#4F57CD
RGB	rgb(79, 87, 205)
HSL	hsl(236, 56%, 56%)
HSV	hsv(236, 61%, 80%)
CMYK	cmyk(61.5%, 57.6%, 0%, 19.6%)
CIE-LAB	lab(42.59, 32.71, -62.31)
CIE-LCH	lch(42.59, 70.38, 297.70°)
OKLab	oklab(51.81% 0.0165 -0.1791)
OKLCH	oklch(51.81% 0.18 275.3)
XYZ	xyz(17.6485, 12.8850, 59.3028)
Luminance	0.1289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F57CD #CDC54F

analogous

#4F96CD #4F57CD #864FCD

triadic

#4F57CD #CD4F57 #57CD4F

tetradic

#4F57CD #CD4F96 #CDC54F #4FCD86

square

#4F57CD #CD4F96 #CDC54F #4FCD86

split-complementary

#4F57CD #CD864F #96CD4F

monochromatic

#24297E #3139AE #4F57CD #7F84DB #AEB2E8

Accessibility & contrast

On white

5.87

#4F57CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#4F57CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F57CD

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F57CD	#FFFFFF	#000000	##FFFFFF
##4F57CD	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD1

Deuteranopia (green-blind)

#005FCB

Tritanopia (blue-blind)

#007389

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4f57cd;
/* rgb */ color: rgb(79, 87, 205);
/* oklch */ color: oklch(51.8% 0.180 275.3);

Tailwind

colors: {
  custom: {
    50: '#8d86dd',
    500: '#4f57cd',
    950: '#000000',
  },
}

SCSS

$custom: #4f57cd;
$custom-light: #8d86dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4f57cd",
  "rgb": {
    "r": 79,
    "g": 87,
    "b": 205
  },
  "hsl": {
    "h": 236.19,
    "s": 55.752,
    "l": 55.686
  },
  "oklch": {
    "l": 0.51808,
    "c": 0.17985,
    "h": 275.3
  },
  "luminance": 0.12886
}

Semantic roles & 50–950 ramp

primary

#4F57CD

secondary

#D6D3A2

accent

#D649DF

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4F57CD

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

Preview Lab → · Contrast checker → · Palette generator →