#3F397D#3F397D

#3F397D is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.8% C 0.111 H 283.9°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#3F397D
RGB	rgb(63, 57, 125)
HSL	hsl(245, 37%, 36%)
HSV	hsv(245, 54%, 49%)
CMYK	cmyk(49.6%, 54.4%, 0%, 51%)
CIE-LAB	lab(28.02, 21.97, -37.94)
CIE-LCH	lch(28.02, 43.84, 300.08°)
OKLab	oklab(38.83% 0.0268 -0.1081)
OKLCH	oklch(38.83% 0.111 283.9)
XYZ	xyz(7.2136, 5.4633, 20.0725)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F397D #777D39

analogous

#39557D #3F397D #61397D

triadic

#3F397D #7D3F39 #397D3F

tetradic

#3F397D #7D3955 #777D39 #397D61

square

#3F397D #7D3955 #777D39 #397D61

split-complementary

#3F397D #7D6139 #557D39

monochromatic

#151329 #2A2653 #3F397D #544CA7 #7972BF

Accessibility & contrast

On white

10.03

#3F397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3F397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F397D

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F397D	#FFFFFF	#000000	##FFFFFF
##3F397D	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17447F

Deuteranopia (green-blind)

#13407C

Tritanopia (blue-blind)

#294855

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f397d;
/* rgb */ color: rgb(63, 57, 125);
/* oklch */ color: oklch(38.8% 0.111 283.9);

Tailwind

colors: {
  custom: {
    50: '#796fa3',
    500: '#3f397d',
    950: '#000000',
  },
}

SCSS

$custom: #3f397d;
$custom-light: #796fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f397d",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 245.294,
    "s": 37.363,
    "l": 35.686
  },
  "oklch": {
    "l": 0.3883,
    "c": 0.11135,
    "h": 283.9
  },
  "luminance": 0.05464
}

Semantic roles & 50–950 ramp

primary

#3F397D

secondary

#A2A86A

accent

#CD5AC3

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#09070F

muted

#7B7A7F

Preview Lab

Preview with #3F397D

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

Preview Lab → · Contrast checker → · Palette generator →