#3F397E#3F397E

#3F397E is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.9% C 0.113 H 283.8°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F397E
RGB	rgb(63, 57, 126)
HSL	hsl(245, 38%, 36%)
HSV	hsv(245, 55%, 49%)
CMYK	cmyk(50%, 54.8%, 0%, 50.6%)
CIE-LAB	lab(28.08, 22.30, -38.45)
CIE-LCH	lch(28.08, 44.45, 300.11°)
OKLab	oklab(38.9% 0.0269 -0.1096)
OKLCH	oklch(38.9% 0.113 283.8)
XYZ	xyz(7.2778, 5.4890, 20.4106)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F397E #787E39

analogous

#39557E #3F397E #61397E

triadic

#3F397E #7E3F39 #397E3F

tetradic

#3F397E #7E3955 #787E39 #397E61

square

#3F397E #7E3955 #787E39 #397E61

split-complementary

#3F397E #7E6139 #557E39

monochromatic

#15132A #2A2654 #3F397E #544CA8 #7972BF

Accessibility & contrast

On white

10.01

#3F397E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3F397E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F397E

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F397E	#FFFFFF	#000000	##FFFFFF
##3F397E	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164480

Deuteranopia (green-blind)

#12407D

Tritanopia (blue-blind)

#294855

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f397e;
/* rgb */ color: rgb(63, 57, 126);
/* oklch */ color: oklch(38.9% 0.113 283.8);

Tailwind

colors: {
  custom: {
    50: '#796fa4',
    500: '#3f397e',
    950: '#000000',
  },
}

SCSS

$custom: #3f397e;
$custom-light: #796fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f397e",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 126
  },
  "hsl": {
    "h": 245.217,
    "s": 37.705,
    "l": 35.882
  },
  "oklch": {
    "l": 0.38904,
    "c": 0.11284,
    "h": 283.8
  },
  "luminance": 0.05489
}

Semantic roles & 50–950 ramp

primary

#3F397E

secondary

#A3A86A

accent

#CE5AC4

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#09070F

muted

#7B7A7F

Preview Lab

Preview with #3F397E

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

Preview Lab → · Contrast checker → · Palette generator →