#4C57DB#4C57DB

#4C57DB is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.7% C 0.199 H 273.7°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#4C57DB
RGB	rgb(76, 87, 219)
HSL	hsl(235, 67%, 58%)
HSV	hsv(235, 65%, 86%)
CMYK	cmyk(65.3%, 60.3%, 0%, 14.1%)
CIE-LAB	lab(43.46, 36.95, -68.94)
CIE-LCH	lch(43.46, 78.21, 298.19°)
OKLab	oklab(52.73% 0.013 -0.1986)
OKLCH	oklch(52.73% 0.199 273.7)
XYZ	xyz(19.1706, 13.4657, 68.5930)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C57DB #DBD04C

analogous

#4C9EDB #4C57DB #894CDB

triadic

#4C57DB #DB4C57 #57DB4C

tetradic

#4C57DB #DB4C9E #DBD04C #4CDB89

square

#4C57DB #DB4C9E #DBD04C #4CDB89

split-complementary

#4C57DB #DB894C #9EDB4C

monochromatic

#1D2690 #2733C3 #4C57DB #7F87E5 #B2B7EF

Accessibility & contrast

On white

5.69

#4C57DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#4C57DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4C57DB

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C57DB	#FFFFFF	#000000	##FFFFFF
##4C57DB	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DDF

Deuteranopia (green-blind)

#0060D8

Tritanopia (blue-blind)

#007891

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4c57db;
/* rgb */ color: rgb(76, 87, 219);
/* oklch */ color: oklch(52.7% 0.199 273.7);

Tailwind

colors: {
  custom: {
    50: '#8e86e7',
    500: '#4c57db',
    950: '#000000',
  },
}

SCSS

$custom: #4c57db;
$custom-light: #8e86e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4c57db",
  "rgb": {
    "r": 76,
    "g": 87,
    "b": 219
  },
  "hsl": {
    "h": 235.385,
    "s": 66.512,
    "l": 57.843
  },
  "oklch": {
    "l": 0.52731,
    "c": 0.19906,
    "h": 273.7
  },
  "luminance": 0.13467
}

Semantic roles & 50–950 ramp

primary

#4C57DB

secondary

#DEDAA5

accent

#DC3EE9

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #4C57DB

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

Preview Lab → · Contrast checker → · Palette generator →