#3F397A#3F397A

#3F397A is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.6% C 0.107 H 284.4°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#3F397A
RGB	rgb(63, 57, 122)
HSL	hsl(246, 36%, 35%)
HSV	hsv(246, 53%, 48%)
CMYK	cmyk(48.4%, 53.3%, 0%, 52.2%)
CIE-LAB	lab(27.81, 20.98, -36.38)
CIE-LCH	lch(27.81, 42.00, 299.98°)
OKLab	oklab(38.61% 0.0266 -0.1035)
OKLCH	oklch(38.61% 0.107 284.4)
XYZ	xyz(7.0248, 5.3878, 19.0784)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F397A #747A39

analogous

#39547A #3F397A #5F397A

triadic

#3F397A #7A3F39 #397A3F

tetradic

#3F397A #7A3954 #747A39 #397A5F

square

#3F397A #7A3954 #747A39 #397A5F

split-complementary

#3F397A #7A5F39 #547A39

monochromatic

#141227 #292650 #3F397A #554CA4 #7871BD

Accessibility & contrast

On white

10.11

#3F397A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#3F397A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F397A

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F397A	#FFFFFF	#000000	##FFFFFF
##3F397A	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B447C

Deuteranopia (green-blind)

#184079

Tritanopia (blue-blind)

#2B4754

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f397a;
/* rgb */ color: rgb(63, 57, 122);
/* oklch */ color: oklch(38.6% 0.107 284.4);

Tailwind

colors: {
  custom: {
    50: '#786fa1',
    500: '#3f397a',
    950: '#000000',
  },
}

SCSS

$custom: #3f397a;
$custom-light: #786fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f397a",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 122
  },
  "hsl": {
    "h": 245.538,
    "s": 36.313,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38612,
    "c": 0.10686,
    "h": 284.4
  },
  "luminance": 0.05388
}

Semantic roles & 50–950 ramp

primary

#3F397A

secondary

#A0A669

accent

#CC5BC2

background

#F7F6F9

surface

#EEECF2

border

#C9C7CC

text

#09070F

muted

#7B7A7E

Preview Lab

Preview with #3F397A

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

Preview Lab → · Contrast checker → · Palette generator →