#4D57CF#4D57CF

#4D57CF is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.8% C 0.183 H 274.5°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#4D57CF
RGB	rgb(77, 87, 207)
HSL	hsl(235, 58%, 56%)
HSV	hsv(235, 63%, 81%)
CMYK	cmyk(62.8%, 58%, 0%, 18.8%)
CIE-LAB	lab(42.61, 33.05, -63.44)
CIE-LCH	lch(42.61, 71.53, 297.52°)
OKLab	oklab(51.84% 0.0142 -0.1825)
OKLCH	oklch(51.84% 0.183 274.5)
XYZ	xyz(17.7275, 12.8977, 60.5747)
Luminance	0.1290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D57CF #CFC54D

analogous

#4D98CF #4D57CF #844DCF

triadic

#4D57CF #CF4D57 #57CF4D

tetradic

#4D57CF #CF4D98 #CFC54D #4DCF84

square

#4D57CF #CF4D98 #CFC54D #4DCF84

split-complementary

#4D57CF #CF844D #98CF4D

monochromatic

#22297F #2F39AF #4D57CF #7D84DC #ADB2E9

Accessibility & contrast

On white

5.87

#4D57CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#4D57CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4D57CF

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D57CF	#FFFFFF	#000000	##FFFFFF
##4D57CF	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)

#006AD3

Deuteranopia (green-blind)

#005FCD

Tritanopia (blue-blind)

#00748A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4d57cf;
/* rgb */ color: rgb(77, 87, 207);
/* oklch */ color: oklch(51.8% 0.183 274.5);

Tailwind

colors: {
  custom: {
    50: '#8c86df',
    500: '#4d57cf',
    950: '#000000',
  },
}

SCSS

$custom: #4d57cf;
$custom-light: #8c86df;
$custom-dark: #000000;

JSON

{
  "hex": "#4d57cf",
  "rgb": {
    "r": 77,
    "g": 87,
    "b": 207
  },
  "hsl": {
    "h": 235.385,
    "s": 57.522,
    "l": 55.686
  },
  "oklch": {
    "l": 0.51835,
    "c": 0.18301,
    "h": 274.5
  },
  "luminance": 0.12899
}

Semantic roles & 50–950 ramp

primary

#4D57CF

secondary

#D7D3A1

accent

#D547E1

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4D57CF

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

Preview Lab → · Contrast checker → · Palette generator →