#3B42BA#3B42BA

#3B42BA is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.2% C 0.185 H 273.7°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#3B42BA
RGB	rgb(59, 66, 186)
HSL	hsl(237, 52%, 48%)
HSV	hsv(237, 68%, 73%)
CMYK	cmyk(68.3%, 64.5%, 0%, 27.1%)
CIE-LAB	lab(34.74, 36.31, -64.09)
CIE-LCH	lch(34.74, 73.66, 299.53°)
OKLab	oklab(45.22% 0.0119 -0.185)
OKLCH	oklch(45.22% 0.185 273.7)
XYZ	xyz(12.6118, 8.3702, 47.3958)
Luminance	0.0837 (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

#3B42BA #BAB33B

analogous

#3B81BA #3B42BA #733BBA

triadic

#3B42BA #BA3B42 #42BA3B

tetradic

#3B42BA #BA3B81 #BAB33B #3BBA73

square

#3B42BA #BA3B81 #BAB33B #3BBA73

split-complementary

#3B42BA #BA733B #81BA3B

monochromatic

#1E215D #2C328C #3B42BA #646ACE #9397DD

Accessibility & contrast

On white

7.85

#3B42BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3B42BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B42BA

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B42BA	#FFFFFF	#000000	##FFFFFF
##3B42BA	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BE

Deuteranopia (green-blind)

#004CB8

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3b42ba;
/* rgb */ color: rgb(59, 66, 186);
/* oklch */ color: oklch(45.2% 0.185 273.7);

Tailwind

colors: {
  custom: {
    50: '#8176d0',
    500: '#3b42ba',
    950: '#000000',
  },
}

SCSS

$custom: #3b42ba;
$custom-light: #8176d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b42ba",
  "rgb": {
    "r": 59,
    "g": 66,
    "b": 186
  },
  "hsl": {
    "h": 236.693,
    "s": 51.837,
    "l": 48.039
  },
  "oklch": {
    "l": 0.45219,
    "c": 0.18536,
    "h": 273.7
  },
  "luminance": 0.08371
}

Semantic roles & 50–950 ramp

primary

#3B42BA

secondary

#C8C489

accent

#D34DDB

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3B42BA

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

Preview Lab → · Contrast checker → · Palette generator →