#4C51DB#4C51DB

#4C51DB is a mid, highly saturated blue. Relative luminance 0.125; OKLCH L 51.7% C 0.206 H 274.9°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#4C51DB
RGB	rgb(76, 81, 219)
HSL	hsl(238, 67%, 58%)
HSV	hsv(238, 65%, 86%)
CMYK	cmyk(65.3%, 63%, 0%, 14.1%)
CIE-LAB	lab(42.05, 40.60, -71.23)
CIE-LCH	lch(42.05, 81.99, 299.69°)
OKLab	oklab(51.7% 0.0177 -0.2054)
OKLCH	oklch(51.7% 0.206 274.9)
XYZ	xyz(18.7049, 12.5342, 68.4377)
Luminance	0.1254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C51DB #DBD64C

analogous

#4C98DB #4C51DB #8E4CDB

triadic

#4C51DB #DB4C51 #51DB4C

tetradic

#4C51DB #DB4C98 #DBD64C #4CDB8E

square

#4C51DB #DB4C98 #DBD64C #4CDB8E

split-complementary

#4C51DB #DB8E4C #98DB4C

monochromatic

#1D2190 #272DC3 #4C51DB #7F83E5 #B2B4EF

Accessibility & contrast

On white

5.99

#4C51DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#4C51DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4C51DB

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C51DB	#FFFFFF	#000000	##FFFFFF
##4C51DB	1.00	5.99	3.51	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ADF

Deuteranopia (green-blind)

#005DD8

Tritanopia (blue-blind)

#00748E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4c51db;
/* rgb */ color: rgb(76, 81, 219);
/* oklch */ color: oklch(51.7% 0.206 274.9);

Tailwind

colors: {
  custom: {
    50: '#8e82e7',
    500: '#4c51db',
    950: '#000000',
  },
}

SCSS

$custom: #4c51db;
$custom-light: #8e82e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4c51db",
  "rgb": {
    "r": 76,
    "g": 81,
    "b": 219
  },
  "hsl": {
    "h": 237.902,
    "s": 66.512,
    "l": 57.843
  },
  "oklch": {
    "l": 0.51699,
    "c": 0.20617,
    "h": 274.9
  },
  "luminance": 0.12536
}

Semantic roles & 50–950 ramp

primary

#4C51DB

secondary

#DEDCA5

accent

#E33EE9

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4C51DB

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

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