#4F57CA#4F57CA

#4F57CA is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.6% C 0.176 H 275.4°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#4F57CA
RGB	rgb(79, 87, 202)
HSL	hsl(236, 54%, 55%)
HSV	hsv(236, 61%, 79%)
CMYK	cmyk(60.9%, 56.9%, 0%, 20.8%)
CIE-LAB	lab(42.37, 31.70, -60.94)
CIE-LCH	lch(42.37, 68.69, 297.49°)
OKLab	oklab(51.58% 0.0164 -0.175)
OKLCH	oklch(51.58% 0.176 275.4)
XYZ	xyz(17.2898, 12.7416, 57.4139)
Luminance	0.1274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F57CA #CAC24F

analogous

#4F94CA #4F57CA #854FCA

triadic

#4F57CA #CA4F57 #57CA4F

tetradic

#4F57CA #CA4F94 #CAC24F #4FCA85

square

#4F57CA #CA4F94 #CAC24F #4FCA85

split-complementary

#4F57CA #CA854F #94CA4F

monochromatic

#252A7A #333BA9 #4F57CA #7E84D8 #ADB1E6

Accessibility & contrast

On white

5.92

#4F57CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#4F57CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F57CA

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F57CA	#FFFFFF	#000000	##FFFFFF
##4F57CA	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CE

Deuteranopia (green-blind)

#005FC8

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4f57ca;
/* rgb */ color: rgb(79, 87, 202);
/* oklch */ color: oklch(51.6% 0.176 275.4);

Tailwind

colors: {
  custom: {
    50: '#8c86db',
    500: '#4f57ca',
    950: '#000000',
  },
}

SCSS

$custom: #4f57ca;
$custom-light: #8c86db;
$custom-dark: #000000;

JSON

{
  "hex": "#4f57ca",
  "rgb": {
    "r": 79,
    "g": 87,
    "b": 202
  },
  "hsl": {
    "h": 236.098,
    "s": 53.712,
    "l": 55.098
  },
  "oklch": {
    "l": 0.51576,
    "c": 0.17582,
    "h": 275.4
  },
  "luminance": 0.12743
}

Semantic roles & 50–950 ramp

primary

#4F57CA

secondary

#D4D1A1

accent

#D44BDD

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4F57CA

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

Preview Lab → · Contrast checker → · Palette generator →