#4E51BB#4E51BB

#4E51BB is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.3% C 0.163 H 277.3°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#4E51BB
RGB	rgb(78, 81, 187)
HSL	hsl(238, 44%, 52%)
HSV	hsv(238, 58%, 73%)
CMYK	cmyk(58.3%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(39.73, 30.28, -56.49)
CIE-LCH	lch(39.73, 64.09, 298.19°)
OKLab	oklab(49.26% 0.0209 -0.1621)
OKLCH	oklch(49.26% 0.163 277.3)
XYZ	xyz(15.0511, 11.0913, 48.3518)
Luminance	0.1109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E51BB #BBB84E

analogous

#4E87BB #4E51BB #824EBB

triadic

#4E51BB #BB4E51 #51BB4E

tetradic

#4E51BB #BB4E87 #BBB84E #4EBB82

square

#4E51BB #BB4E87 #BBB84E #4EBB82

split-complementary

#4E51BB #BB824E #87BB4E

monochromatic

#282967 #393B93 #4E51BB #7A7CCC #A6A8DD

Accessibility & contrast

On white

6.52

#4E51BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#4E51BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4E51BB

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E51BB	#FFFFFF	#000000	##FFFFFF
##4E51BB	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BF

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#026A7E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4e51bb;
/* rgb */ color: rgb(78, 81, 187);
/* oklch */ color: oklch(49.3% 0.163 277.3);

Tailwind

colors: {
  custom: {
    50: '#8982d0',
    500: '#4e51bb',
    950: '#000000',
  },
}

SCSS

$custom: #4e51bb;
$custom-light: #8982d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4e51bb",
  "rgb": {
    "r": 78,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 238.349,
    "s": 44.49,
    "l": 51.961
  },
  "oklch": {
    "l": 0.49255,
    "c": 0.1634,
    "h": 277.3
  },
  "luminance": 0.11092
}

Semantic roles & 50–950 ramp

primary

#4E51BB

secondary

#CAC99B

accent

#D154D4

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0D0A14

muted

#7D7C82

Preview Lab

Preview with #4E51BB

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

Preview Lab → · Contrast checker → · Palette generator →