#3F338B#3F338B

#3F338B is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.8% C 0.140 H 283.9°. Best body text is #FFFFFF at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#3F338B
RGB	rgb(63, 51, 139)
HSL	hsl(248, 46%, 37%)
HSV	hsv(248, 63%, 55%)
CMYK	cmyk(54.7%, 63.3%, 0%, 45.5%)
CIE-LAB	lab(27.54, 30.46, -47.44)
CIE-LCH	lch(27.54, 56.38, 302.71°)
OKLab	oklab(38.81% 0.0338 -0.1361)
OKLCH	oklch(38.81% 0.14 283.9)
XYZ	xyz(7.8925, 5.2881, 25.0259)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F338B #7F8B33

analogous

#33538B #3F338B #6B338B

triadic

#3F338B #8B3F33 #338B3F

tetradic

#3F338B #8B3353 #7F8B33 #338B6B

square

#3F338B #8B3353 #7F8B33 #338B6B

split-complementary

#3F338B #8B6B33 #538B33

monochromatic

#161231 #2B235E #3F338B #5343B8 #7B6ECA

Accessibility & contrast

On white

10.21

#3F338B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#3F338B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F338B

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F338B	#FFFFFF	#000000	##FFFFFF
##3F338B	1.00	10.21	2.06	10.21
#FFFFFF	10.21	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#1F485A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #3f338b;
/* rgb */ color: rgb(63, 51, 139);
/* oklch */ color: oklch(38.8% 0.140 283.9);

Tailwind

colors: {
  custom: {
    50: '#7b6bae',
    500: '#3f338b',
    950: '#000000',
  },
}

SCSS

$custom: #3f338b;
$custom-light: #7b6bae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f338b",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 139
  },
  "hsl": {
    "h": 248.182,
    "s": 46.316,
    "l": 37.255
  },
  "oklch": {
    "l": 0.38809,
    "c": 0.1402,
    "h": 283.9
  },
  "luminance": 0.05288
}

Semantic roles & 50–950 ramp

primary

#3F338B

secondary

#A8B268

accent

#D652C4

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A0610

muted

#7C7A7F

Preview Lab

Preview with #3F338B

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

Preview Lab → · Contrast checker → · Palette generator →