#3B43BB#3B43BB

#3B43BB is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.5% C 0.185 H 273.4°. Best body text is #FFFFFF at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#3B43BB
RGB	rgb(59, 67, 187)
HSL	hsl(236, 52%, 48%)
HSV	hsv(236, 68%, 73%)
CMYK	cmyk(68.4%, 64.2%, 0%, 26.7%)
CIE-LAB	lab(35.06, 36.03, -64.15)
CIE-LCH	lch(35.06, 73.57, 299.32°)
OKLab	oklab(45.48% 0.0111 -0.1852)
OKLCH	oklch(45.48% 0.185 273.4)
XYZ	xyz(12.7774, 8.5308, 47.9773)
Luminance	0.0853 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B43BB #BBB33B

analogous

#3B83BB #3B43BB #733BBB

triadic

#3B43BB #BB3B43 #43BB3B

tetradic

#3B43BB #BB3B83 #BBB33B #3BBB73

square

#3B43BB #BB3B83 #BBB33B #3BBB73

split-complementary

#3B43BB #BB733B #83BB3B

monochromatic

#1E225E #2C328C #3B43BB #656BCE #9398DD

Accessibility & contrast

On white

7.76

#3B43BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3B43BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B43BB

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B43BB	#FFFFFF	#000000	##FFFFFF
##3B43BB	1.00	7.76	2.71	7.76
#FFFFFF	7.76	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BF

Deuteranopia (green-blind)

#004DB9

Tritanopia (blue-blind)

#006279

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3b43bb;
/* rgb */ color: rgb(59, 67, 187);
/* oklch */ color: oklch(45.5% 0.185 273.4);

Tailwind

colors: {
  custom: {
    50: '#8177d0',
    500: '#3b43bb',
    950: '#000000',
  },
}

SCSS

$custom: #3b43bb;
$custom-light: #8177d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b43bb",
  "rgb": {
    "r": 59,
    "g": 67,
    "b": 187
  },
  "hsl": {
    "h": 236.25,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.45481,
    "c": 0.18549,
    "h": 273.4
  },
  "luminance": 0.08532
}

Semantic roles & 50–950 ramp

primary

#3B43BB

secondary

#C8C48A

accent

#D34CDB

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3B43BB

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

Preview Lab → · Contrast checker → · Palette generator →