#3F3BB1#3F3BB1

#3F3BB1 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.5% C 0.181 H 277.3°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BB1
RGB	rgb(63, 59, 177)
HSL	hsl(242, 50%, 46%)
HSV	hsv(242, 67%, 69%)
CMYK	cmyk(64.4%, 66.7%, 0%, 30.6%)
CIE-LAB	lab(32.61, 38.12, -62.24)
CIE-LCH	lch(32.61, 72.98, 301.48°)
OKLab	oklab(43.49% 0.0229 -0.1795)
OKLCH	oklch(43.49% 0.181 277.3)
XYZ	xyz(11.5471, 7.3581, 42.3982)
Luminance	0.0736 (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

#3F3BB1 #ADB13B

analogous

#3B72B1 #3F3BB1 #7A3BB1

triadic

#3F3BB1 #B13F3B #3BB13F

tetradic

#3F3BB1 #B13B72 #ADB13B #3BB17A

square

#3F3BB1 #B13B72 #ADB13B #3BB17A

split-complementary

#3F3BB1 #B17A3B #72B13B

monochromatic

#1E1C55 #2F2C83 #3F3BB1 #635FCA #908DD9

Accessibility & contrast

On white

8.50

#3F3BB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3F3BB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BB1

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BB1	#FFFFFF	#000000	##FFFFFF
##3F3BB1	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0048AF

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f3bb1;
/* rgb */ color: rgb(63, 59, 177);
/* oklch */ color: oklch(43.5% 0.181 277.3);

Tailwind

colors: {
  custom: {
    50: '#8272c9',
    500: '#3f3bb1',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bb1;
$custom-light: #8272c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bb1",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 177
  },
  "hsl": {
    "h": 242.034,
    "s": 50,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43494,
    "c": 0.18094,
    "h": 277.3
  },
  "luminance": 0.07359
}

Semantic roles & 50–950 ramp

primary

#3F3BB1

secondary

#C2C484

accent

#DA4ED5

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3BB1

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

Preview Lab → · Contrast checker → · Palette generator →