#4757CB#4757CB

#4757CB is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.2% C 0.179 H 272.5°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#4757CB
RGB	rgb(71, 87, 203)
HSL	hsl(233, 56%, 54%)
HSV	hsv(233, 65%, 80%)
CMYK	cmyk(65%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(41.95, 30.73, -62.23)
CIE-LCH	lch(41.95, 69.40, 296.28°)
OKLab	oklab(51.15% 0.0077 -0.179)
OKLCH	oklch(51.15% 0.179 272.5)
XYZ	xyz(16.7826, 12.4663, 58.0101)
Luminance	0.1247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4757CB #CBBB47

analogous

#4799CB #4757CB #7947CB

triadic

#4757CB #CB4757 #57CB47

tetradic

#4757CB #CB4799 #CBBB47 #47CB79

square

#4757CB #CB4799 #CBBB47 #47CB79

split-complementary

#4757CB #CB7947 #99CB47

monochromatic

#212C76 #2F3DA6 #4757CB #7783D8 #A6AEE6

Accessibility & contrast

On white

6.01

#4757CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#4757CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4757CB

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4757CB	#FFFFFF	#000000	##FFFFFF
##4757CB	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CF

Deuteranopia (green-blind)

#005DC9

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4757cb;
/* rgb */ color: rgb(71, 87, 203);
/* oklch */ color: oklch(51.2% 0.179 272.5);

Tailwind

colors: {
  custom: {
    50: '#8886dc',
    500: '#4757cb',
    950: '#000000',
  },
}

SCSS

$custom: #4757cb;
$custom-light: #8886dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4757cb",
  "rgb": {
    "r": 71,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 232.727,
    "s": 55.932,
    "l": 53.725
  },
  "oklch": {
    "l": 0.51154,
    "c": 0.17921,
    "h": 272.5
  },
  "luminance": 0.12468
}

Semantic roles & 50–950 ramp

primary

#4757CB

secondary

#D3CC9B

accent

#CD49DF

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4757CB

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

Preview Lab → · Contrast checker → · Palette generator →