#3F43AE#3F43AE

#3F43AE is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.6% C 0.167 H 275.6°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F43AE
RGB	rgb(63, 67, 174)
HSL	hsl(238, 47%, 46%)
HSV	hsv(238, 64%, 68%)
CMYK	cmyk(63.8%, 61.5%, 0%, 31.8%)
CIE-LAB	lab(34.24, 32.12, -57.78)
CIE-LCH	lch(34.24, 66.11, 299.07°)
OKLab	oklab(44.61% 0.0164 -0.1664)
OKLCH	oklch(44.61% 0.167 275.6)
XYZ	xyz(11.6945, 8.1261, 40.9884)
Luminance	0.0813 (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

#3F43AE #AEAA3F

analogous

#3F7BAE #3F43AE #733FAE

triadic

#3F43AE #AE3F43 #43AE3F

tetradic

#3F43AE #AE3F7B #AEAA3F #3FAE73

square

#3F43AE #AE3F7B #AEAA3F #3FAE73

split-complementary

#3F43AE #AE733F #7BAE3F

monochromatic

#1E2054 #2F3281 #3F43AE #6467C7 #9093D7

Accessibility & contrast

On white

8.00

#3F43AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#3F43AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43AE

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43AE	#FFFFFF	#000000	##FFFFFF
##3F43AE	1.00	8.00	2.63	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B1

Deuteranopia (green-blind)

#004CAC

Tritanopia (blue-blind)

#005E72

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f43ae;
/* rgb */ color: rgb(63, 67, 174);
/* oklch */ color: oklch(44.6% 0.167 275.6);

Tailwind

colors: {
  custom: {
    50: '#8077c7',
    500: '#3f43ae',
    950: '#000000',
  },
}

SCSS

$custom: #3f43ae;
$custom-light: #8077c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43ae",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 174
  },
  "hsl": {
    "h": 237.838,
    "s": 46.835,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44611,
    "c": 0.16718,
    "h": 275.6
  },
  "luminance": 0.08127
}

Semantic roles & 50–950 ramp

primary

#3F43AE

secondary

#C2C087

accent

#D251D6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3F43AE

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

Preview Lab → · Contrast checker → · Palette generator →