#4A57CB#4A57CB

#4A57CB is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.3% C 0.178 H 273.5°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#4A57CB
RGB	rgb(74, 87, 203)
HSL	hsl(234, 55%, 54%)
HSV	hsv(234, 64%, 80%)
CMYK	cmyk(63.5%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(42.13, 31.21, -61.93)
CIE-LCH	lch(42.13, 69.35, 296.75°)
OKLab	oklab(51.33% 0.0109 -0.1781)
OKLCH	oklch(51.33% 0.178 273.5)
XYZ	xyz(17.0082, 12.5826, 58.0207)
Luminance	0.1258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4A57CB #CBBE4A

analogous

#4A98CB #4A57CB #7D4ACB

triadic

#4A57CB #CB4A57 #57CB4A

tetradic

#4A57CB #CB4A98 #CBBE4A #4ACB7D

square

#4A57CB #CB4A98 #CBBE4A #4ACB7D

split-complementary

#4A57CB #CB7D4A #98CB4A

monochromatic

#232B78 #303CA8 #4A57CB #7A83D9 #A9AFE6

Accessibility & contrast

On white

5.97

#4A57CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#4A57CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4A57CB

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4A57CB	#FFFFFF	#000000	##FFFFFF
##4A57CB	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CF

Deuteranopia (green-blind)

#005EC9

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4a57cb;
/* rgb */ color: rgb(74, 87, 203);
/* oklch */ color: oklch(51.3% 0.178 273.5);

Tailwind

colors: {
  custom: {
    50: '#8a86dc',
    500: '#4a57cb',
    950: '#000000',
  },
}

SCSS

$custom: #4a57cb;
$custom-light: #8a86dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4a57cb",
  "rgb": {
    "r": 74,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 233.953,
    "s": 55.365,
    "l": 54.314
  },
  "oklch": {
    "l": 0.51335,
    "c": 0.17841,
    "h": 273.5
  },
  "luminance": 0.12584
}

Semantic roles & 50–950 ramp

primary

#4A57CB

secondary

#D4CE9D

accent

#D049DF

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4A57CB

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

Preview Lab → · Contrast checker → · Palette generator →