#3F688F#3F688F

#3F688F is a mid, moderate cyan. Relative luminance 0.129; OKLCH L 50.4% C 0.078 H 248.4°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F688F
RGB	rgb(63, 104, 143)
HSL	hsl(209, 39%, 40%)
HSV	hsv(209, 56%, 56%)
CMYK	cmyk(55.9%, 27.3%, 0%, 43.9%)
CIE-LAB	lab(42.67, -2.37, -25.79)
CIE-LCH	lch(42.67, 25.90, 264.75°)
OKLab	oklab(50.44% -0.0286 -0.0723)
OKLCH	oklch(50.44% 0.078 248.4)
XYZ	xyz(11.9564, 12.9396, 27.8488)
Luminance	0.1294 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F688F #8F663F

analogous

#3F8F8E #3F688F #3F408F

triadic

#3F688F #8F3F68 #688F3F

tetradic

#3F688F #8E3F8F #8F663F #408F3F

square

#3F688F #8E3F8F #8F663F #408F3F

split-complementary

#3F688F #8F3F40 #8F8E3F

monochromatic

#1A2A3A #2C4965 #3F688F #5687B5 #81A5C7

Accessibility & contrast

On white

5.85

#3F688F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3F688F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F688F

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F688F	#FFFFFF	#000000	##FFFFFF
##3F688F	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#586991

Deuteranopia (green-blind)

#4D618E

Tritanopia (blue-blind)

#097175

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f688f;
/* rgb */ color: rgb(63, 104, 143);
/* oklch */ color: oklch(50.4% 0.078 248.4);

Tailwind

colors: {
  custom: {
    50: '#7a93b0',
    500: '#3f688f',
    950: '#000000',
  },
}

SCSS

$custom: #3f688f;
$custom-light: #7a93b0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f688f",
  "rgb": {
    "r": 63,
    "g": 104,
    "b": 143
  },
  "hsl": {
    "h": 209.25,
    "s": 38.835,
    "l": 40.392
  },
  "oklch": {
    "l": 0.50442,
    "c": 0.07777,
    "h": 248.4
  },
  "luminance": 0.12941
}

Semantic roles & 50–950 ramp

primary

#3F688F

secondary

#B29478

accent

#9259CF

background

#F7F9FA

surface

#EEF1F4

border

#C9CBCE

text

#0A0D10

muted

#7C7E7F

Preview Lab

Preview with #3F688F

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

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