#3B42BC#3B42BC

#3B42BC is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.4% C 0.188 H 273.6°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#3B42BC
RGB	rgb(59, 66, 188)
HSL	hsl(237, 52%, 48%)
HSV	hsv(237, 69%, 74%)
CMYK	cmyk(68.6%, 64.9%, 0%, 26.3%)
CIE-LAB	lab(34.91, 37.00, -64.98)
CIE-LCH	lch(34.91, 74.78, 299.66°)
OKLab	oklab(45.4% 0.0118 -0.1876)
OKLCH	oklch(45.4% 0.188 273.6)
XYZ	xyz(12.8259, 8.4559, 48.5234)
Luminance	0.0846 (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

#3B42BC #BCB53B

analogous

#3B82BC #3B42BC #743BBC

triadic

#3B42BC #BC3B42 #42BC3B

tetradic

#3B42BC #BC3B82 #BCB53B #3BBC74

square

#3B42BC #BC3B82 #BCB53B #3BBC74

split-complementary

#3B42BC #BC743B #82BC3B

monochromatic

#1E215F #2C328D #3B42BC #656BCF #9498DD

Accessibility & contrast

On white

7.80

#3B42BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3B42BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B42BC

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B42BC	#FFFFFF	#000000	##FFFFFF
##3B42BC	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C0

Deuteranopia (green-blind)

#004CBA

Tritanopia (blue-blind)

#006279

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3b42bc;
/* rgb */ color: rgb(59, 66, 188);
/* oklch */ color: oklch(45.4% 0.188 273.6);

Tailwind

colors: {
  custom: {
    50: '#8276d1',
    500: '#3b42bc',
    950: '#000000',
  },
}

SCSS

$custom: #3b42bc;
$custom-light: #8276d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3b42bc",
  "rgb": {
    "r": 59,
    "g": 66,
    "b": 188
  },
  "hsl": {
    "h": 236.744,
    "s": 52.227,
    "l": 48.431
  },
  "oklch": {
    "l": 0.45398,
    "c": 0.18798,
    "h": 273.6
  },
  "luminance": 0.08457
}

Semantic roles & 50–950 ramp

primary

#3B42BC

secondary

#C9C58A

accent

#D44CDC

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3B42BC

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

Preview Lab → · Contrast checker → · Palette generator →