#3F38BC#3F38BC

#3F38BC is a dark, vivid blue. Relative luminance 0.075; OKLCH L 44.0% C 0.198 H 276.8°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#3F38BC
RGB	rgb(63, 56, 188)
HSL	hsl(243, 54%, 48%)
HSV	hsv(243, 70%, 74%)
CMYK	cmyk(66.5%, 70.2%, 0%, 26.3%)
CIE-LAB	lab(32.95, 43.53, -68.19)
CIE-LCH	lch(32.95, 80.90, 302.55°)
OKLab	oklab(44.05% 0.0236 -0.1969)
OKLCH	oklch(44.05% 0.198 276.8)
XYZ	xyz(12.5382, 7.5149, 48.3570)
Luminance	0.0752 (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

#3F38BC #B5BC38

analogous

#3873BC #3F38BC #8138BC

triadic

#3F38BC #BC3F38 #38BC3F

tetradic

#3F38BC #BC3873 #B5BC38 #38BC81

square

#3F38BC #BC3873 #B5BC38 #38BC81

split-complementary

#3F38BC #BC8138 #73BC38

monochromatic

#1F1C5E #2F2A8D #3F38BC #6761D0 #9490DE

Accessibility & contrast

On white

8.39

#3F38BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3F38BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F38BC

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F38BC	#FFFFFF	#000000	##FFFFFF
##3F38BC	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C0

Deuteranopia (green-blind)

#0048BA

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f38bc;
/* rgb */ color: rgb(63, 56, 188);
/* oklch */ color: oklch(44.0% 0.198 276.8);

Tailwind

colors: {
  custom: {
    50: '#8470d1',
    500: '#3f38bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f38bc;
$custom-light: #8470d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f38bc",
  "rgb": {
    "r": 63,
    "g": 56,
    "b": 188
  },
  "hsl": {
    "h": 243.182,
    "s": 54.098,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44046,
    "c": 0.19832,
    "h": 276.8
  },
  "luminance": 0.07516
}

Semantic roles & 50–950 ramp

primary

#3F38BC

secondary

#C5C987

accent

#DD4AD6

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3F38BC

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

Preview Lab → · Contrast checker → · Palette generator →