#3F4E8F#3F4E8F

#3F4E8F is a dark, moderate blue. Relative luminance 0.085; OKLCH L 44.5% C 0.108 H 271.6°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F4E8F
RGB	rgb(63, 78, 143)
HSL	hsl(229, 39%, 40%)
HSV	hsv(229, 56%, 56%)
CMYK	cmyk(55.9%, 45.5%, 0%, 43.9%)
CIE-LAB	lab(34.98, 14.17, -37.92)
CIE-LCH	lch(34.98, 40.48, 290.48°)
OKLab	oklab(44.47% 0.003 -0.1079)
OKLCH	oklch(44.47% 0.108 271.6)
XYZ	xyz(9.7306, 8.4880, 27.1069)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4E8F #8F803F

analogous

#3F768F #3F4E8F #583F8F

triadic

#3F4E8F #8F3F4E #4E8F3F

tetradic

#3F4E8F #8F3F76 #8F803F #3F8F58

square

#3F4E8F #8F3F76 #8F803F #3F8F58

split-complementary

#3F4E8F #8F583F #768F3F

monochromatic

#1A203A #2C3765 #3F4E8F #5668B5 #818EC7

Accessibility & contrast

On white

7.78

#3F4E8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3F4E8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E8F

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4E8F	#FFFFFF	#000000	##FFFFFF
##3F4E8F	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#325691

Deuteranopia (green-blind)

#284F8E

Tritanopia (blue-blind)

#155C67

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f4e8f;
/* rgb */ color: rgb(63, 78, 143);
/* oklch */ color: oklch(44.5% 0.108 271.6);

Tailwind

colors: {
  custom: {
    50: '#7a7fb0',
    500: '#3f4e8f',
    950: '#000000',
  },
}

SCSS

$custom: #3f4e8f;
$custom-light: #7a7fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4e8f",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 143
  },
  "hsl": {
    "h": 228.75,
    "s": 38.835,
    "l": 40.392
  },
  "oklch": {
    "l": 0.44469,
    "c": 0.1079,
    "h": 271.6
  },
  "luminance": 0.08489
}

Semantic roles & 50–950 ramp

primary

#3F4E8F

secondary

#B2A778

accent

#B959CF

background

#F7F7FA

surface

#EEEEF5

border

#C9C9CF

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F4E8F

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

Preview Lab → · Contrast checker → · Palette generator →