#4F51DB#4F51DB

#4F51DB is a mid, highly saturated blue. Relative luminance 0.127; OKLCH L 51.9% C 0.205 H 275.9°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#4F51DB
RGB	rgb(79, 81, 219)
HSL	hsl(239, 66%, 58%)
HSV	hsv(239, 64%, 86%)
CMYK	cmyk(63.9%, 63%, 0%, 14.1%)
CIE-LAB	lab(42.25, 41.03, -70.90)
CIE-LCH	lch(42.25, 81.92, 300.06°)
OKLab	oklab(51.89% 0.0211 -0.2044)
OKLCH	oklch(51.89% 0.205 275.9)
XYZ	xyz(18.9489, 12.6600, 68.4492)
Luminance	0.1266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F51DB #DBD94F

analogous

#4F97DB #4F51DB #934FDB

triadic

#4F51DB #DB4F51 #51DB4F

tetradic

#4F51DB #DB4F97 #DBD94F #4FDB93

square

#4F51DB #DB4F97 #DBD94F #4FDB93

split-complementary

#4F51DB #DB934F #97DB4F

monochromatic

#1E1F92 #282AC5 #4F51DB #8283E5 #B5B5F0

Accessibility & contrast

On white

5.94

#4F51DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#4F51DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F51DB

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F51DB	#FFFFFF	#000000	##FFFFFF
##4F51DB	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ADF

Deuteranopia (green-blind)

#005ED8

Tritanopia (blue-blind)

#00748E

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4f51db;
/* rgb */ color: rgb(79, 81, 219);
/* oklch */ color: oklch(51.9% 0.205 275.9);

Tailwind

colors: {
  custom: {
    50: '#9082e7',
    500: '#4f51db',
    950: '#000000',
  },
}

SCSS

$custom: #4f51db;
$custom-light: #9082e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4f51db",
  "rgb": {
    "r": 79,
    "g": 81,
    "b": 219
  },
  "hsl": {
    "h": 239.143,
    "s": 66.038,
    "l": 58.431
  },
  "oklch": {
    "l": 0.51892,
    "c": 0.20547,
    "h": 275.9
  },
  "luminance": 0.12662
}

Semantic roles & 50–950 ramp

primary

#4F51DB

secondary

#DFDEA7

accent

#E73FE9

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4F51DB

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

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