#3F4E8D#3F4E8D

#3F4E8D is a dark, moderate blue. Relative luminance 0.084; OKLCH L 44.3% C 0.105 H 271.5°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#3F4E8D
RGB	rgb(63, 78, 141)
HSL	hsl(228, 38%, 40%)
HSV	hsv(228, 55%, 55%)
CMYK	cmyk(55.3%, 44.7%, 0%, 44.7%)
CIE-LAB	lab(34.86, 13.47, -36.89)
CIE-LCH	lch(34.86, 39.28, 290.06°)
OKLab	oklab(44.34% 0.0027 -0.1048)
OKLCH	oklch(44.34% 0.105 271.5)
XYZ	xyz(9.5804, 8.4280, 26.3161)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4E8D #8D7E3F

analogous

#3F758D #3F4E8D #573F8D

triadic

#3F4E8D #8D3F4E #4E8D3F

tetradic

#3F4E8D #8D3F75 #8D7E3F #3F8D57

square

#3F4E8D #8D3F75 #8D7E3F #3F8D57

split-complementary

#3F4E8D #8D573F #758D3F

monochromatic

#191F38 #2C3763 #3F4E8D #5668B3 #808EC6

Accessibility & contrast

On white

7.82

#3F4E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3F4E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E8D

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4E8D	#FFFFFF	#000000	##FFFFFF
##3F4E8D	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33568F

Deuteranopia (green-blind)

#2A4F8C

Tritanopia (blue-blind)

#185C66

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f4e8d;
/* rgb */ color: rgb(63, 78, 141);
/* oklch */ color: oklch(44.3% 0.105 271.5);

Tailwind

colors: {
  custom: {
    50: '#7a7faf',
    500: '#3f4e8d',
    950: '#000000',
  },
}

SCSS

$custom: #3f4e8d;
$custom-light: #7a7faf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4e8d",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 141
  },
  "hsl": {
    "h": 228.462,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.44338,
    "c": 0.10488,
    "h": 271.5
  },
  "luminance": 0.08429
}

Semantic roles & 50–950 ramp

primary

#3F4E8D

secondary

#B1A677

accent

#B85ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F4E8D

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

Preview Lab → · Contrast checker → · Palette generator →