#3A42BB#3A42BB

#3A42BB is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.2% C 0.187 H 273.3°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#3A42BB
RGB	rgb(58, 66, 187)
HSL	hsl(236, 53%, 48%)
HSV	hsv(236, 69%, 73%)
CMYK	cmyk(69%, 64.7%, 0%, 26.7%)
CIE-LAB	lab(34.77, 36.52, -64.64)
CIE-LCH	lch(34.77, 74.24, 299.47°)
OKLab	oklab(45.25% 0.0107 -0.1866)
OKLCH	oklch(45.25% 0.187 273.3)
XYZ	xyz(12.6598, 8.3826, 47.9549)
Luminance	0.0838 (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

#3A42BB #BBB33A

analogous

#3A82BB #3A42BB #723ABB

triadic

#3A42BB #BB3A42 #42BB3A

tetradic

#3A42BB #BB3A82 #BBB33A #3ABB72

square

#3A42BB #BB3A82 #BBB33A #3ABB72

split-complementary

#3A42BB #BB723A #82BB3A

monochromatic

#1D215E #2C328C #3A42BB #636ACF #9297DD

Accessibility & contrast

On white

7.85

#3A42BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#3A42BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A42BB

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A42BB	#FFFFFF	#000000	##FFFFFF
##3A42BB	1.00	7.85	2.68	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BF

Deuteranopia (green-blind)

#004CB9

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3a42bb;
/* rgb */ color: rgb(58, 66, 187);
/* oklch */ color: oklch(45.2% 0.187 273.3);

Tailwind

colors: {
  custom: {
    50: '#8176d0',
    500: '#3a42bb',
    950: '#000000',
  },
}

SCSS

$custom: #3a42bb;
$custom-light: #8176d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3a42bb",
  "rgb": {
    "r": 58,
    "g": 66,
    "b": 187
  },
  "hsl": {
    "h": 236.279,
    "s": 52.653,
    "l": 48.039
  },
  "oklch": {
    "l": 0.45248,
    "c": 0.18693,
    "h": 273.3
  },
  "luminance": 0.08384
}

Semantic roles & 50–950 ramp

primary

#3A42BB

secondary

#C8C488

accent

#D34CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3A42BB

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

Preview Lab → · Contrast checker → · Palette generator →