#4A57CF#4A57CF

#4A57CF is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.6% C 0.184 H 273.4°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#4A57CF
RGB	rgb(74, 87, 207)
HSL	hsl(234, 58%, 55%)
HSV	hsv(234, 64%, 81%)
CMYK	cmyk(64.3%, 58%, 0%, 18.8%)
CIE-LAB	lab(42.42, 32.57, -63.75)
CIE-LCH	lch(42.42, 71.59, 297.07°)
OKLab	oklab(51.65% 0.0109 -0.1834)
OKLCH	oklch(51.65% 0.184 273.4)
XYZ	xyz(17.4910, 12.7757, 60.5636)
Luminance	0.1278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4A57CF #CFC24A

analogous

#4A9ACF #4A57CF #7F4ACF

triadic

#4A57CF #CF4A57 #57CF4A

tetradic

#4A57CF #CF4A9A #CFC24A #4ACF7F

square

#4A57CF #CF4A9A #CFC24A #4ACF7F

split-complementary

#4A57CF #CF7F4A #9ACF4A

monochromatic

#212A7D #2E3BAE #4A57CF #7A84DC #ABB1E9

Accessibility & contrast

On white

5.91

#4A57CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#4A57CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4A57CF

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4A57CF	#FFFFFF	#000000	##FFFFFF
##4A57CF	1.00	5.91	3.56	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD3

Deuteranopia (green-blind)

#005ECD

Tritanopia (blue-blind)

#00748A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4a57cf;
/* rgb */ color: rgb(74, 87, 207);
/* oklch */ color: oklch(51.6% 0.184 273.4);

Tailwind

colors: {
  custom: {
    50: '#8b86df',
    500: '#4a57cf',
    950: '#000000',
  },
}

SCSS

$custom: #4a57cf;
$custom-light: #8b86df;
$custom-dark: #000000;

JSON

{
  "hex": "#4a57cf",
  "rgb": {
    "r": 74,
    "g": 87,
    "b": 207
  },
  "hsl": {
    "h": 234.135,
    "s": 58.079,
    "l": 55.098
  },
  "oklch": {
    "l": 0.51648,
    "c": 0.18378,
    "h": 273.4
  },
  "luminance": 0.12777
}

Semantic roles & 50–950 ramp

primary

#4A57CF

secondary

#D6D19F

accent

#D246E1

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4A57CF

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

Preview Lab → · Contrast checker → · Palette generator →