#4F57D9#4F57D9

#4F57D9 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.8% C 0.196 H 274.8°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#4F57D9
RGB	rgb(79, 87, 217)
HSL	hsl(237, 64%, 58%)
HSV	hsv(237, 64%, 85%)
CMYK	cmyk(63.6%, 59.9%, 0%, 14.9%)
CIE-LAB	lab(43.49, 36.72, -67.74)
CIE-LCH	lch(43.49, 77.05, 298.46°)
OKLab	oklab(52.76% 0.0163 -0.195)
OKLCH	oklch(52.76% 0.196 274.8)
XYZ	xyz(19.1529, 13.4868, 67.2261)
Luminance	0.1349 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F57D9 #D9D14F

analogous

#4F9CD9 #4F57D9 #8C4FD9

triadic

#4F57D9 #D94F57 #57D94F

tetradic

#4F57D9 #D94F9C #D9D14F #4FD98C

square

#4F57D9 #D94F9C #D9D14F #4FD98C

split-complementary

#4F57D9 #D98C4F #9CD94F

monochromatic

#1F258F #2A32C1 #4F57D9 #8187E4 #B4B7EF

Accessibility & contrast

On white

5.68

#4F57D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#4F57D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F57D9

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F57D9	#FFFFFF	#000000	##FFFFFF
##4F57D9	1.00	5.68	3.70	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DDD

Deuteranopia (green-blind)

#0061D6

Tritanopia (blue-blind)

#007790

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4f57d9;
/* rgb */ color: rgb(79, 87, 217);
/* oklch */ color: oklch(52.8% 0.196 274.8);

Tailwind

colors: {
  custom: {
    50: '#8f86e6',
    500: '#4f57d9',
    950: '#000000',
  },
}

SCSS

$custom: #4f57d9;
$custom-light: #8f86e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4f57d9",
  "rgb": {
    "r": 79,
    "g": 87,
    "b": 217
  },
  "hsl": {
    "h": 236.522,
    "s": 64.486,
    "l": 58.039
  },
  "oklch": {
    "l": 0.52755,
    "c": 0.19572,
    "h": 274.8
  },
  "luminance": 0.13488
}

Semantic roles & 50–950 ramp

primary

#4F57D9

secondary

#DDDAA6

accent

#DE40E7

background

#F9F8FE

surface

#F2EFFC

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #4F57D9

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

Preview Lab → · Contrast checker → · Palette generator →