#3F649C#3F649C

#3F649C is a mid, moderate blue. Relative luminance 0.126; OKLCH L 50.2% C 0.099 H 258.4°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F649C
RGB	rgb(63, 100, 156)
HSL	hsl(216, 42%, 43%)
HSV	hsv(216, 60%, 61%)
CMYK	cmyk(59.6%, 35.9%, 0%, 38.8%)
CIE-LAB	lab(42.11, 4.52, -34.44)
CIE-LCH	lch(42.11, 34.73, 277.47°)
OKLab	oklab(50.21% -0.0199 -0.0974)
OKLCH	oklch(50.21% 0.099 258.4)
XYZ	xyz(12.6057, 12.5703, 33.2081)
Luminance	0.1257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F649C #9C773F

analogous

#3F929C #3F649C #483F9C

triadic

#3F649C #9C3F64 #649C3F

tetradic

#3F649C #9C3F92 #9C773F #3F9C48

square

#3F649C #9C3F92 #9C773F #3F9C48

split-complementary

#3F649C #9C483F #929C3F

monochromatic

#1C2C45 #2D4870 #3F649C #5B82BD #87A3CE

Accessibility & contrast

On white

5.98

#3F649C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#3F649C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F649C

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F649C	#FFFFFF	#000000	##FFFFFF
##3F649C	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D689E

Deuteranopia (green-blind)

#415F9B

Tritanopia (blue-blind)

#007178

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f649c;
/* rgb */ color: rgb(63, 100, 156);
/* oklch */ color: oklch(50.2% 0.099 258.4);

Tailwind

colors: {
  custom: {
    50: '#7c8fb9',
    500: '#3f649c',
    950: '#000000',
  },
}

SCSS

$custom: #3f649c;
$custom-light: #7c8fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f649c",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 156
  },
  "hsl": {
    "h": 216.129,
    "s": 42.466,
    "l": 42.941
  },
  "oklch": {
    "l": 0.5021,
    "c": 0.09946,
    "h": 258.4
  },
  "luminance": 0.12571
}

Semantic roles & 50–950 ramp

primary

#3F649C

secondary

#B9A17E

accent

#A156D2

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#0A0C11

muted

#7C7D80

Preview Lab

Preview with #3F649C

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

Preview Lab → · Contrast checker → · Palette generator →