#4757CF#4757CF

#4757CF is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.5% C 0.185 H 272.4°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#4757CF
RGB	rgb(71, 87, 207)
HSL	hsl(233, 59%, 55%)
HSV	hsv(233, 66%, 81%)
CMYK	cmyk(65.7%, 58%, 0%, 18.8%)
CIE-LAB	lab(42.25, 32.11, -64.05)
CIE-LCH	lch(42.25, 71.65, 296.63°)
OKLab	oklab(51.47% 0.0077 -0.1844)
OKLCH	oklch(51.47% 0.185 272.4)
XYZ	xyz(17.2654, 12.6594, 60.5530)
Luminance	0.1266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4757CF #CFBF47

analogous

#479BCF #4757CF #7B47CF

triadic

#4757CF #CF4757 #57CF47

tetradic

#4757CF #CF479B #CFBF47 #47CF7B

square

#4757CF #CF479B #CFBF47 #47CF7B

split-complementary

#4757CF #CF7B47 #9BCF47

monochromatic

#202B7B #2D3CAC #4757CF #7883DC #A8B0E8

Accessibility & contrast

On white

5.95

#4757CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#4757CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4757CF

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4757CF	#FFFFFF	#000000	##FFFFFF
##4757CF	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	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: #4757cf;
/* rgb */ color: rgb(71, 87, 207);
/* oklch */ color: oklch(51.5% 0.185 272.4);

Tailwind

colors: {
  custom: {
    50: '#8986df',
    500: '#4757cf',
    950: '#000000',
  },
}

SCSS

$custom: #4757cf;
$custom-light: #8986df;
$custom-dark: #000000;

JSON

{
  "hex": "#4757cf",
  "rgb": {
    "r": 71,
    "g": 87,
    "b": 207
  },
  "hsl": {
    "h": 232.941,
    "s": 58.621,
    "l": 54.51
  },
  "oklch": {
    "l": 0.51469,
    "c": 0.18455,
    "h": 272.4
  },
  "luminance": 0.12661
}

Semantic roles & 50–950 ramp

primary

#4757CF

secondary

#D6CF9C

accent

#CF46E2

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4757CF

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

Preview Lab → · Contrast checker → · Palette generator →