#4F51DD#4F51DD

#4F51DD is a mid, highly saturated blue. Relative luminance 0.128; OKLCH L 52.1% C 0.208 H 275.8°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#4F51DD
RGB	rgb(79, 81, 221)
HSL	hsl(239, 68%, 59%)
HSV	hsv(239, 64%, 87%)
CMYK	cmyk(64.3%, 63.3%, 0%, 13.3%)
CIE-LAB	lab(42.41, 41.68, -71.78)
CIE-LCH	lch(42.41, 83.01, 300.14°)
OKLab	oklab(52.06% 0.021 -0.2069)
OKLCH	oklch(52.06% 0.208 275.8)
XYZ	xyz(19.2137, 12.7660, 69.8441)
Luminance	0.1277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F51DD #DDDB4F

analogous

#4F98DD #4F51DD #944FDD

triadic

#4F51DD #DD4F51 #51DD4F

tetradic

#4F51DD #DD4F98 #DDDB4F #4FDD94

square

#4F51DD #DD4F98 #DDDB4F #4FDD94

split-complementary

#4F51DD #DD944F #98DD4F

monochromatic

#1D1E95 #2729C8 #4F51DD #8284E7 #B6B6F1

Accessibility & contrast

On white

5.91

#4F51DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#4F51DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F51DD

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F51DD	#FFFFFF	#000000	##FFFFFF
##4F51DD	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AE1

Deuteranopia (green-blind)

#005EDA

Tritanopia (blue-blind)

#007590

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4f51dd;
/* rgb */ color: rgb(79, 81, 221);
/* oklch */ color: oklch(52.1% 0.208 275.8);

Tailwind

colors: {
  custom: {
    50: '#9082e9',
    500: '#4f51dd',
    950: '#000000',
  },
}

SCSS

$custom: #4f51dd;
$custom-light: #9082e9;
$custom-dark: #000000;

JSON

{
  "hex": "#4f51dd",
  "rgb": {
    "r": 79,
    "g": 81,
    "b": 221
  },
  "hsl": {
    "h": 239.155,
    "s": 67.619,
    "l": 58.824
  },
  "oklch": {
    "l": 0.5206,
    "c": 0.20801,
    "h": 275.8
  },
  "luminance": 0.12768
}

Semantic roles & 50–950 ramp

primary

#4F51DD

secondary

#E0DFA8

accent

#E83DEA

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4F51DD

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

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