#3F666B#3F666B

#3F666B is a mid, muted teal. Relative luminance 0.116; OKLCH L 48.3% C 0.045 H 206.1°. Best body text is #FFFFFF at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F666B
RGB	rgb(63, 102, 107)
HSL	hsl(187, 26%, 33%)
HSV	hsv(187, 41%, 42%)
CMYK	cmyk(41.1%, 4.7%, 0%, 58%)
CIE-LAB	lab(40.61, -12.33, -7.17)
CIE-LCH	lch(40.61, 14.26, 210.19°)
OKLab	oklab(48.33% -0.0402 -0.0197)
OKLCH	oklch(48.33% 0.045 206.1)
XYZ	xyz(9.4542, 11.6204, 15.6518)
Luminance	0.1162 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F666B #6B443F

analogous

#3F6B5A #3F666B #3F506B

triadic

#3F666B #6B3F66 #666B3F

tetradic

#3F666B #5A3F6B #6B443F #506B3F

square

#3F666B #5A3F6B #6B443F #506B3F

split-complementary

#3F666B #6B3F50 #6B5A3F

monochromatic

#121D1E #284144 #3F666B #568B92 #76A8AE

Accessibility & contrast

On white

6.32

#3F666B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#3F666B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F666B

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F666B	#FFFFFF	#000000	##FFFFFF
##3F666B	1.00	6.32	3.32	6.32
#FFFFFF	6.32	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60636B

Deuteranopia (green-blind)

#595D6B

Tritanopia (blue-blind)

#2D6967

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f666b;
/* rgb */ color: rgb(63, 102, 107);
/* oklch */ color: oklch(48.3% 0.045 206.1);

Tailwind

colors: {
  custom: {
    50: '#769195',
    500: '#3f666b',
    950: '#000000',
  },
}

SCSS

$custom: #3f666b;
$custom-light: #769195;
$custom-dark: #000000;

JSON

{
  "hex": "#3f666b",
  "rgb": {
    "r": 63,
    "g": 102,
    "b": 107
  },
  "hsl": {
    "h": 186.818,
    "s": 25.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.48327,
    "c": 0.04475,
    "h": 206.1
  },
  "luminance": 0.11621
}

Semantic roles & 50–950 ramp

primary

#3F666B

secondary

#99726C

accent

#7066C2

background

#F7F8F9

surface

#EDF0F1

border

#C8CBCB

text

#090C0D

muted

#7B7D7E

Preview Lab

Preview with #3F666B

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

Preview Lab → · Contrast checker → · Palette generator →