#3F38BF#3F38BF

#3F38BF is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.3% C 0.202 H 276.6°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#3F38BF
RGB	rgb(63, 56, 191)
HSL	hsl(243, 55%, 48%)
HSV	hsv(243, 71%, 75%)
CMYK	cmyk(67%, 70.7%, 0%, 25.1%)
CIE-LAB	lab(33.23, 44.51, -69.49)
CIE-LCH	lch(33.23, 82.52, 302.64°)
OKLab	oklab(44.33% 0.0231 -0.2007)
OKLCH	oklch(44.33% 0.202 276.6)
XYZ	xyz(12.8650, 7.6456, 50.0779)
Luminance	0.0765 (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

#3F38BF #B8BF38

analogous

#3874BF #3F38BF #8238BF

triadic

#3F38BF #BF3F38 #38BF3F

tetradic

#3F38BF #BF3874 #B8BF38 #38BF82

square

#3F38BF #BF3874 #B8BF38 #38BF82

split-complementary

#3F38BF #BF8238 #74BF38

monochromatic

#201C60 #2F2A90 #3F38BF #6963D1 #9692DF

Accessibility & contrast

On white

8.30

#3F38BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3F38BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F38BF

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F38BF	#FFFFFF	#000000	##FFFFFF
##3F38BF	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C3

Deuteranopia (green-blind)

#0048BD

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f38bf;
/* rgb */ color: rgb(63, 56, 191);
/* oklch */ color: oklch(44.3% 0.202 276.6);

Tailwind

colors: {
  custom: {
    50: '#8570d3',
    500: '#3f38bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f38bf;
$custom-light: #8570d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f38bf",
  "rgb": {
    "r": 63,
    "g": 56,
    "b": 191
  },
  "hsl": {
    "h": 243.111,
    "s": 54.656,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44334,
    "c": 0.20204,
    "h": 276.6
  },
  "luminance": 0.07647
}

Semantic roles & 50–950 ramp

primary

#3F38BF

secondary

#C7CA89

accent

#DE4AD6

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3F38BF

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

Preview Lab → · Contrast checker → · Palette generator →