#4F55DB#4F55DB

#4F55DB is a mid, highly saturated blue. Relative luminance 0.133; OKLCH L 52.6% C 0.201 H 275.1°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#4F55DB
RGB	rgb(79, 85, 219)
HSL	hsl(237, 66%, 58%)
HSV	hsv(237, 64%, 86%)
CMYK	cmyk(63.9%, 61.2%, 0%, 14.1%)
CIE-LAB	lab(43.17, 38.61, -69.40)
CIE-LCH	lch(43.17, 79.41, 299.09°)
OKLab	oklab(52.57% 0.0179 -0.1999)
OKLCH	oklch(52.57% 0.201 275.1)
XYZ	xyz(19.2549, 13.2721, 68.5512)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F55DB #DBD54F

analogous

#4F9BDB #4F55DB #8F4FDB

triadic

#4F55DB #DB4F55 #55DB4F

tetradic

#4F55DB #DB4F9B #DBD54F #4FDB8F

square

#4F55DB #DB4F9B #DBD54F #4FDB8F

split-complementary

#4F55DB #DB8F4F #9BDB4F

monochromatic

#1E2392 #282FC5 #4F55DB #8286E5 #B5B7F0

Accessibility & contrast

On white

5.75

#4F55DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#4F55DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F55DB

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F55DB	#FFFFFF	#000000	##FFFFFF
##4F55DB	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CDF

Deuteranopia (green-blind)

#0060D8

Tritanopia (blue-blind)

#007790

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #4f55db;
/* rgb */ color: rgb(79, 85, 219);
/* oklch */ color: oklch(52.6% 0.201 275.1);

Tailwind

colors: {
  custom: {
    50: '#8f85e7',
    500: '#4f55db',
    950: '#000000',
  },
}

SCSS

$custom: #4f55db;
$custom-light: #8f85e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4f55db",
  "rgb": {
    "r": 79,
    "g": 85,
    "b": 219
  },
  "hsl": {
    "h": 237.429,
    "s": 66.038,
    "l": 58.431
  },
  "oklch": {
    "l": 0.52569,
    "c": 0.20073,
    "h": 275.1
  },
  "luminance": 0.13274
}

Semantic roles & 50–950 ramp

primary

#4F55DB

secondary

#DFDCA7

accent

#E23FE9

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #4F55DB

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

Preview Lab → · Contrast checker → · Palette generator →