#4F57DD#4F57DD

#4F57DD is a mid, highly saturated blue. Relative luminance 0.137; OKLCH L 53.1% C 0.201 H 274.6°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#4F57DD
RGB	rgb(79, 87, 221)
HSL	hsl(237, 68%, 59%)
HSV	hsv(237, 64%, 87%)
CMYK	cmyk(64.3%, 60.6%, 0%, 13.3%)
CIE-LAB	lab(43.80, 38.06, -69.52)
CIE-LCH	lch(43.80, 79.25, 298.70°)
OKLab	oklab(53.08% 0.0162 -0.2003)
OKLCH	oklch(53.08% 0.201 274.6)
XYZ	xyz(19.6795, 13.6974, 69.9994)
Luminance	0.1370 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F57DD #DDD54F

analogous

#4F9EDD #4F57DD #8E4FDD

triadic

#4F57DD #DD4F57 #57DD4F

tetradic

#4F57DD #DD4F9E #DDD54F #4FDD8E

square

#4F57DD #DD4F9E #DDD54F #4FDD8E

split-complementary

#4F57DD #DD8E4F #9EDD4F

monochromatic

#1D2495 #2730C8 #4F57DD #8288E7 #B6B9F1

Accessibility & contrast

On white

5.62

#4F57DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#4F57DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F57DD

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F57DD	#FFFFFF	#000000	##FFFFFF
##4F57DD	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006EE1

Deuteranopia (green-blind)

#0061DA

Tritanopia (blue-blind)

#007892

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4f57dd;
/* rgb */ color: rgb(79, 87, 221);
/* oklch */ color: oklch(53.1% 0.201 274.6);

Tailwind

colors: {
  custom: {
    50: '#9086e9',
    500: '#4f57dd',
    950: '#000000',
  },
}

SCSS

$custom: #4f57dd;
$custom-light: #9086e9;
$custom-dark: #000000;

JSON

{
  "hex": "#4f57dd",
  "rgb": {
    "r": 79,
    "g": 87,
    "b": 221
  },
  "hsl": {
    "h": 236.62,
    "s": 67.619,
    "l": 58.824
  },
  "oklch": {
    "l": 0.53078,
    "c": 0.20092,
    "h": 274.6
  },
  "luminance": 0.13699
}

Semantic roles & 50–950 ramp

primary

#4F57DD

secondary

#E0DDA8

accent

#E13DEA

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #4F57DD

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

Preview Lab → · Contrast checker → · Palette generator →