#3F2FA1#3F2FA1

#3F2FA1 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.1% C 0.174 H 281.5°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F2FA1
RGB	rgb(63, 47, 161)
HSL	hsl(248, 55%, 41%)
HSV	hsv(248, 71%, 63%)
CMYK	cmyk(60.9%, 70.8%, 0%, 36.9%)
CIE-LAB	lab(28.54, 40.02, -59.29)
CIE-LCH	lch(28.54, 71.53, 304.02°)
OKLab	oklab(40.12% 0.0347 -0.1708)
OKLCH	oklch(40.12% 0.174 281.5)
XYZ	xyz(9.4974, 5.6623, 34.3038)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F2FA1 #91A12F

analogous

#2F58A1 #3F2FA1 #782FA1

triadic

#3F2FA1 #A13F2F #2FA13F

tetradic

#3F2FA1 #A12F58 #91A12F #2FA178

square

#3F2FA1 #A12F58 #91A12F #2FA178

split-complementary

#3F2FA1 #A1782F #58A12F

monochromatic

#1A1342 #2C2172 #3F2FA1 #5745C9 #8274D6

Accessibility & contrast

On white

9.85

#3F2FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#3F2FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F2FA1

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F2FA1	#FFFFFF	#000000	##FFFFFF
##3F2FA1	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A4

Deuteranopia (green-blind)

#003F9F

Tritanopia (blue-blind)

#004D64

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3f2fa1;
/* rgb */ color: rgb(63, 47, 161);
/* oklch */ color: oklch(40.1% 0.174 281.5);

Tailwind

colors: {
  custom: {
    50: '#8069be',
    500: '#3f2fa1',
    950: '#000000',
  },
}

SCSS

$custom: #3f2fa1;
$custom-light: #8069be;
$custom-dark: #000000;

JSON

{
  "hex": "#3f2fa1",
  "rgb": {
    "r": 63,
    "g": 47,
    "b": 161
  },
  "hsl": {
    "h": 248.421,
    "s": 54.808,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40124,
    "c": 0.17435,
    "h": 281.5
  },
  "luminance": 0.05663
}

Semantic roles & 50–950 ramp

primary

#3F2FA1

secondary

#B3BE6E

accent

#DE4AC9

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #3F2FA1

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

Preview Lab → · Contrast checker → · Palette generator →