#3F447A#3F447A

#3F447A is a dark, moderate blue. Relative luminance 0.066; OKLCH L 40.9% C 0.090 H 277.6°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F447A
RGB	rgb(63, 68, 122)
HSL	hsl(235, 32%, 36%)
HSV	hsv(235, 48%, 48%)
CMYK	cmyk(48.4%, 44.3%, 0%, 52.2%)
CIE-LAB	lab(30.87, 13.66, -31.50)
CIE-LCH	lch(30.87, 34.34, 293.45°)
OKLab	oklab(40.92% 0.012 -0.0891)
OKLCH	oklch(40.92% 0.09 277.6)
XYZ	xyz(7.6288, 6.5957, 19.2797)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F447A #7A753F

analogous

#3F627A #3F447A #583F7A

triadic

#3F447A #7A3F44 #447A3F

tetradic

#3F447A #7A3F62 #7A753F #3F7A58

square

#3F447A #7A3F62 #7A753F #3F7A58

split-complementary

#3F447A #7A583F #627A3F

monochromatic

#151729 #2A2E52 #3F447A #545AA2 #797FBA

Accessibility & contrast

On white

9.05

#3F447A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3F447A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F447A

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F447A	#FFFFFF	#000000	##FFFFFF
##3F447A	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4B7C

Deuteranopia (green-blind)

#2A4679

Tritanopia (blue-blind)

#2A4F59

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3f447a;
/* rgb */ color: rgb(63, 68, 122);
/* oklch */ color: oklch(40.9% 0.090 277.6);

Tailwind

colors: {
  custom: {
    50: '#7877a1',
    500: '#3f447a',
    950: '#000000',
  },
}

SCSS

$custom: #3f447a;
$custom-light: #7877a1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f447a",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 122
  },
  "hsl": {
    "h": 234.915,
    "s": 31.892,
    "l": 36.275
  },
  "oklch": {
    "l": 0.40923,
    "c": 0.08993,
    "h": 277.6
  },
  "luminance": 0.06596
}

Semantic roles & 50–950 ramp

primary

#3F447A

secondary

#A4A070

accent

#BF60C8

background

#F7F7F9

surface

#EDEDF2

border

#C8C8CC

text

#09080F

muted

#7B7B7E

Preview Lab

Preview with #3F447A

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

Preview Lab → · Contrast checker → · Palette generator →