#4B51BA#4B51BA

#4B51BA is a mid, vivid blue. Relative luminance 0.109; OKLCH L 49.0% C 0.163 H 276.1°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#4B51BA
RGB	rgb(75, 81, 186)
HSL	hsl(237, 45%, 51%)
HSV	hsv(237, 60%, 73%)
CMYK	cmyk(59.7%, 56.5%, 0%, 27.1%)
CIE-LAB	lab(39.45, 29.39, -56.37)
CIE-LCH	lch(39.45, 63.57, 297.54°)
OKLab	oklab(48.97% 0.0174 -0.1618)
OKLCH	oklch(48.97% 0.163 276.1)
XYZ	xyz(14.7041, 10.9248, 47.7787)
Luminance	0.1093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B51BA #BAB44B

analogous

#4B88BA #4B51BA #7C4BBA

triadic

#4B51BA #BA4B51 #51BA4B

tetradic

#4B51BA #BA4B88 #BAB44B #4BBA7C

square

#4B51BA #BA4B88 #BAB44B #4BBA7C

split-complementary

#4B51BA #BA7C4B #88BA4B

monochromatic

#262A64 #373C90 #4B51BA #777CCB #A3A7DC

Accessibility & contrast

On white

6.59

#4B51BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#4B51BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B51BA

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B51BA	#FFFFFF	#000000	##FFFFFF
##4B51BA	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BE

Deuteranopia (green-blind)

#0058B8

Tritanopia (blue-blind)

#006A7D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4b51ba;
/* rgb */ color: rgb(75, 81, 186);
/* oklch */ color: oklch(49.0% 0.163 276.1);

Tailwind

colors: {
  custom: {
    50: '#8881cf',
    500: '#4b51ba',
    950: '#000000',
  },
}

SCSS

$custom: #4b51ba;
$custom-light: #8881cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4b51ba",
  "rgb": {
    "r": 75,
    "g": 81,
    "b": 186
  },
  "hsl": {
    "h": 236.757,
    "s": 44.578,
    "l": 51.176
  },
  "oklch": {
    "l": 0.4897,
    "c": 0.16271,
    "h": 276.1
  },
  "luminance": 0.10926
}

Semantic roles & 50–950 ramp

primary

#4B51BA

secondary

#C9C698

accent

#CD54D4

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4B51BA

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

Preview Lab → · Contrast checker → · Palette generator →