#4F57DA#4F57DA

#4F57DA is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.8% C 0.197 H 274.7°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#4F57DA
RGB	rgb(79, 87, 218)
HSL	hsl(237, 65%, 58%)
HSV	hsv(237, 64%, 85%)
CMYK	cmyk(63.8%, 60.1%, 0%, 14.5%)
CIE-LAB	lab(43.56, 37.06, -68.18)
CIE-LCH	lch(43.56, 77.60, 298.52°)
OKLab	oklab(52.84% 0.0163 -0.1963)
OKLCH	oklch(52.84% 0.197 274.7)
XYZ	xyz(19.2834, 13.5390, 67.9132)
Luminance	0.1354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F57DA #DAD24F

analogous

#4F9CDA #4F57DA #8C4FDA

triadic

#4F57DA #DA4F57 #57DA4F

tetradic

#4F57DA #DA4F9C #DAD24F #4FDA8C

square

#4F57DA #DA4F9C #DAD24F #4FDA8C

split-complementary

#4F57DA #DA8C4F #9CDA4F

monochromatic

#1E2590 #2932C3 #4F57DA #8287E5 #B4B8EF

Accessibility & contrast

On white

5.66

#4F57DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#4F57DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F57DA

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F57DA	#FFFFFF	#000000	##FFFFFF
##4F57DA	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DDE

Deuteranopia (green-blind)

#0061D7

Tritanopia (blue-blind)

#007790

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4f57da;
/* rgb */ color: rgb(79, 87, 218);
/* oklch */ color: oklch(52.8% 0.197 274.7);

Tailwind

colors: {
  custom: {
    50: '#8f86e6',
    500: '#4f57da',
    950: '#000000',
  },
}

SCSS

$custom: #4f57da;
$custom-light: #8f86e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4f57da",
  "rgb": {
    "r": 79,
    "g": 87,
    "b": 218
  },
  "hsl": {
    "h": 236.547,
    "s": 65.258,
    "l": 58.235
  },
  "oklch": {
    "l": 0.52835,
    "c": 0.19703,
    "h": 274.7
  },
  "luminance": 0.13541
}

Semantic roles & 50–950 ramp

primary

#4F57DA

secondary

#DEDBA7

accent

#DF40E8

background

#F9F8FE

surface

#F2EFFC

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #4F57DA

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

Preview Lab → · Contrast checker → · Palette generator →