#3F42AE#3F42AE

#3F42AE is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.4% C 0.168 H 275.9°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F42AE
RGB	rgb(63, 66, 174)
HSL	hsl(238, 47%, 46%)
HSV	hsv(238, 64%, 68%)
CMYK	cmyk(63.8%, 62.1%, 0%, 31.8%)
CIE-LAB	lab(34.00, 32.75, -58.18)
CIE-LCH	lch(34.00, 66.76, 299.38°)
OKLab	oklab(44.43% 0.0173 -0.1675)
OKLCH	oklch(44.43% 0.168 275.9)
XYZ	xyz(11.6356, 8.0082, 40.9688)
Luminance	0.0801 (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

#3F42AE #AEAB3F

analogous

#3F7AAE #3F42AE #743FAE

triadic

#3F42AE #AE3F42 #42AE3F

tetradic

#3F42AE #AE3F7A #AEAB3F #3FAE74

square

#3F42AE #AE3F7A #AEAB3F #3FAE74

split-complementary

#3F42AE #AE743F #7AAE3F

monochromatic

#1E2054 #2F3181 #3F42AE #6466C7 #9092D7

Accessibility & contrast

On white

8.07

#3F42AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3F42AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F42AE

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F42AE	#FFFFFF	#000000	##FFFFFF
##3F42AE	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B2

Deuteranopia (green-blind)

#004BAC

Tritanopia (blue-blind)

#005D71

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f42ae;
/* rgb */ color: rgb(63, 66, 174);
/* oklch */ color: oklch(44.4% 0.168 275.9);

Tailwind

colors: {
  custom: {
    50: '#8176c7',
    500: '#3f42ae',
    950: '#000000',
  },
}

SCSS

$custom: #3f42ae;
$custom-light: #8176c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f42ae",
  "rgb": {
    "r": 63,
    "g": 66,
    "b": 174
  },
  "hsl": {
    "h": 238.378,
    "s": 46.835,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44432,
    "c": 0.16844,
    "h": 275.9
  },
  "luminance": 0.08009
}

Semantic roles & 50–950 ramp

primary

#3F42AE

secondary

#C2C087

accent

#D351D6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3F42AE

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

Preview Lab → · Contrast checker → · Palette generator →