#3F669F#3F669F

#3F669F is a mid, moderate blue. Relative luminance 0.131; OKLCH L 50.8% C 0.101 H 257.8°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F669F
RGB	rgb(63, 102, 159)
HSL	hsl(216, 43%, 44%)
HSV	hsv(216, 60%, 62%)
CMYK	cmyk(60.4%, 35.8%, 0%, 37.6%)
CIE-LAB	lab(42.86, 4.30, -35.04)
CIE-LCH	lch(42.86, 35.30, 277.00°)
OKLab	oklab(50.84% -0.0214 -0.0992)
OKLCH	oklch(50.84% 0.101 257.8)
XYZ	xyz(13.0571, 13.0616, 34.6272)
Luminance	0.1306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F669F #9F783F

analogous

#3F969F #3F669F #483F9F

triadic

#3F669F #9F3F66 #669F3F

tetradic

#3F669F #9F3F96 #9F783F #3F9F48

square

#3F669F #9F3F96 #9F783F #3F9F48

split-complementary

#3F669F #9F483F #969F3F

monochromatic

#1C2E47 #2E4A73 #3F669F #5D84BF #88A5D0

Accessibility & contrast

On white

5.81

#3F669F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#3F669F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F669F

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F669F	#FFFFFF	#000000	##FFFFFF
##3F669F	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E6AA1

Deuteranopia (green-blind)

#41619E

Tritanopia (blue-blind)

#00737B

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f669f;
/* rgb */ color: rgb(63, 102, 159);
/* oklch */ color: oklch(50.8% 0.101 257.8);

Tailwind

colors: {
  custom: {
    50: '#7c91bb',
    500: '#3f669f',
    950: '#000000',
  },
}

SCSS

$custom: #3f669f;
$custom-light: #7c91bb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f669f",
  "rgb": {
    "r": 63,
    "g": 102,
    "b": 159
  },
  "hsl": {
    "h": 215.625,
    "s": 43.243,
    "l": 43.529
  },
  "oklch": {
    "l": 0.50843,
    "c": 0.10146,
    "h": 257.8
  },
  "luminance": 0.13063
}

Semantic roles & 50–950 ramp

primary

#3F669F

secondary

#BBA27F

accent

#A055D3

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #3F669F

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

Preview Lab → · Contrast checker → · Palette generator →