#3F38BE#3F38BE

#3F38BE is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.2% C 0.201 H 276.6°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F38BE
RGB	rgb(63, 56, 190)
HSL	hsl(243, 54%, 48%)
HSV	hsv(243, 71%, 75%)
CMYK	cmyk(66.8%, 70.5%, 0%, 25.5%)
CIE-LAB	lab(33.14, 44.18, -69.06)
CIE-LCH	lch(33.14, 81.98, 302.61°)
OKLab	oklab(44.24% 0.0232 -0.1995)
OKLCH	oklch(44.24% 0.201 276.6)
XYZ	xyz(12.7553, 7.6017, 49.5003)
Luminance	0.0760 (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

#3F38BE #B7BE38

analogous

#3874BE #3F38BE #8238BE

triadic

#3F38BE #BE3F38 #38BE3F

tetradic

#3F38BE #BE3874 #B7BE38 #38BE82

square

#3F38BE #BE3874 #B7BE38 #38BE82

split-complementary

#3F38BE #BE8238 #74BE38

monochromatic

#201C5F #2F2A8F #3F38BE #6862D1 #9692DF

Accessibility & contrast

On white

8.33

#3F38BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3F38BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F38BE

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F38BE	#FFFFFF	#000000	##FFFFFF
##3F38BE	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C2

Deuteranopia (green-blind)

#0048BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f38be;
/* rgb */ color: rgb(63, 56, 190);
/* oklch */ color: oklch(44.2% 0.201 276.6);

Tailwind

colors: {
  custom: {
    50: '#8570d3',
    500: '#3f38be',
    950: '#000000',
  },
}

SCSS

$custom: #3f38be;
$custom-light: #8570d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f38be",
  "rgb": {
    "r": 63,
    "g": 56,
    "b": 190
  },
  "hsl": {
    "h": 243.134,
    "s": 54.472,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44238,
    "c": 0.20081,
    "h": 276.6
  },
  "luminance": 0.07603
}

Semantic roles & 50–950 ramp

primary

#3F38BE

secondary

#C6CA88

accent

#DE4AD6

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3F38BE

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

Preview Lab → · Contrast checker → · Palette generator →