#3F4E81#3F4E81

#3F4E81 is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.6% C 0.086 H 270.1°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#3F4E81
RGB	rgb(63, 78, 129)
HSL	hsl(226, 34%, 38%)
HSV	hsv(226, 51%, 51%)
CMYK	cmyk(51.2%, 39.5%, 0%, 49.4%)
CIE-LAB	lab(34.17, 9.39, -30.62)
CIE-LCH	lch(34.17, 32.03, 287.05°)
OKLab	oklab(43.58% 0.0002 -0.0865)
OKLCH	oklch(43.58% 0.087 270.1)
XYZ	xyz(8.7355, 8.0900, 21.8658)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4E81 #81723F

analogous

#3F6F81 #3F4E81 #513F81

triadic

#3F4E81 #813F4E #4E813F

tetradic

#3F4E81 #813F6F #81723F #3F8151

square

#3F4E81 #813F6F #81723F #3F8151

split-complementary

#3F4E81 #81513F #6F813F

monochromatic

#171C2F #2B3558 #3F4E81 #5367AA #7C8BBF

Accessibility & contrast

On white

8.02

#3F4E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3F4E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4E81

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4E81	#FFFFFF	#000000	##FFFFFF
##3F4E81	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5383

Deuteranopia (green-blind)

#344E80

Tritanopia (blue-blind)

#245961

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f4e81;
/* rgb */ color: rgb(63, 78, 129);
/* oklch */ color: oklch(43.6% 0.086 270.1);

Tailwind

colors: {
  custom: {
    50: '#787fa6',
    500: '#3f4e81',
    950: '#000000',
  },
}

SCSS

$custom: #3f4e81;
$custom-light: #787fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4e81",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 129
  },
  "hsl": {
    "h": 226.364,
    "s": 34.375,
    "l": 37.647
  },
  "oklch": {
    "l": 0.43584,
    "c": 0.0865,
    "h": 270.1
  },
  "luminance": 0.08091
}

Semantic roles & 50–950 ramp

primary

#3F4E81

secondary

#A99D73

accent

#B25DCA

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A0F

muted

#7B7C7F

Preview Lab

Preview with #3F4E81

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

Preview Lab → · Contrast checker → · Palette generator →