#3F388E#3F388E

#3F388E is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.137 H 281.9°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F388E
RGB	rgb(63, 56, 142)
HSL	hsl(245, 43%, 39%)
HSV	hsv(245, 61%, 56%)
CMYK	cmyk(55.6%, 60.6%, 0%, 44.3%)
CIE-LAB	lab(29.00, 28.27, -46.93)
CIE-LCH	lch(29.00, 54.78, 301.06°)
OKLab	oklab(39.95% 0.0283 -0.1345)
OKLCH	oklch(39.95% 0.137 281.9)
XYZ	xyz(8.3451, 5.8376, 26.2730)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F388E #878E38

analogous

#385C8E #3F388E #6A388E

triadic

#3F388E #8E3F38 #388E3F

tetradic

#3F388E #8E385C #878E38 #388E6A

square

#3F388E #8E385C #878E38 #388E6A

split-complementary

#3F388E #8E6A38 #5C8E38

monochromatic

#181536 #2C2762 #3F388E #544BB8 #7E77C9

Accessibility & contrast

On white

9.69

#3F388E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#3F388E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F388E

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F388E	#FFFFFF	#000000	##FFFFFF
##3F388E	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#00418C

Tritanopia (blue-blind)

#1B4C5D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3f388e;
/* rgb */ color: rgb(63, 56, 142);
/* oklch */ color: oklch(40.0% 0.137 281.9);

Tailwind

colors: {
  custom: {
    50: '#7b6fb0',
    500: '#3f388e',
    950: '#000000',
  },
}

SCSS

$custom: #3f388e;
$custom-light: #7b6fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f388e",
  "rgb": {
    "r": 63,
    "g": 56,
    "b": 142
  },
  "hsl": {
    "h": 244.884,
    "s": 43.434,
    "l": 38.824
  },
  "oklch": {
    "l": 0.39954,
    "c": 0.13748,
    "h": 281.9
  },
  "luminance": 0.05838
}

Semantic roles & 50–950 ramp

primary

#3F388E

secondary

#ADB26F

accent

#D355C9

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #3F388E

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

Preview Lab → · Contrast checker → · Palette generator →