#3C42BB#3C42BB

#3C42BB is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.4% C 0.186 H 274.0°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#3C42BB
RGB	rgb(60, 66, 187)
HSL	hsl(237, 51%, 48%)
HSV	hsv(237, 68%, 73%)
CMYK	cmyk(67.9%, 64.7%, 0%, 26.7%)
CIE-LAB	lab(34.89, 36.79, -64.43)
CIE-LCH	lch(34.89, 74.19, 299.72°)
OKLab	oklab(45.37% 0.013 -0.186)
OKLCH	oklch(45.37% 0.186 274)
XYZ	xyz(12.7784, 8.4438, 47.9605)
Luminance	0.0844 (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

#3C42BB #BBB53C

analogous

#3C81BB #3C42BB #753CBB

triadic

#3C42BB #BB3C42 #42BB3C

tetradic

#3C42BB #BB3C81 #BBB53C #3CBB75

square

#3C42BB #BB3C81 #BBB53C #3CBB75

split-complementary

#3C42BB #BB753C #81BB3C

monochromatic

#1E215E #2D328D #3C42BB #666BCE #9598DD

Accessibility & contrast

On white

7.81

#3C42BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3C42BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3C42BB

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C42BB	#FFFFFF	#000000	##FFFFFF
##3C42BB	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	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: #3c42bb;
/* rgb */ color: rgb(60, 66, 187);
/* oklch */ color: oklch(45.4% 0.186 274.0);

Tailwind

colors: {
  custom: {
    50: '#8276d0',
    500: '#3c42bb',
    950: '#000000',
  },
}

SCSS

$custom: #3c42bb;
$custom-light: #8276d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3c42bb",
  "rgb": {
    "r": 60,
    "g": 66,
    "b": 187
  },
  "hsl": {
    "h": 237.165,
    "s": 51.417,
    "l": 48.431
  },
  "oklch": {
    "l": 0.4537,
    "c": 0.18642,
    "h": 274
  },
  "luminance": 0.08445
}

Semantic roles & 50–950 ramp

primary

#3C42BB

secondary

#C8C58B

accent

#D44DDB

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3C42BB

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

Preview Lab → · Contrast checker → · Palette generator →