#3F809B#3F809B

#3F809B is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 56.8% C 0.078 H 227.7°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F809B
RGB	rgb(63, 128, 155)
HSL	hsl(198, 42%, 43%)
HSV	hsv(198, 59%, 61%)
CMYK	cmyk(59.4%, 17.4%, 0%, 39.2%)
CIE-LAB	lab(50.52, -12.50, -20.75)
CIE-LCH	lch(50.52, 24.22, 238.94°)
OKLab	oklab(56.83% -0.0526 -0.0578)
OKLCH	oklch(56.83% 0.078 227.7)
XYZ	xyz(15.6832, 18.8602, 33.8179)
Luminance	0.1886 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F809B #9B5A3F

analogous

#3F9B88 #3F809B #3F529B

triadic

#3F809B #9B3F80 #809B3F

tetradic

#3F809B #883F9B #9B5A3F #529B3F

square

#3F809B #883F9B #9B5A3F #529B3F

split-complementary

#3F809B #9B3F52 #9B883F

monochromatic

#1C3844 #2D5C6F #3F809B #5BA0BC #86B9CE

Accessibility & contrast

On white

4.40

#3F809B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#3F809B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F809B

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F809B	#FFFFFF	#000000	##000000
##3F809B	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#727E9C

Deuteranopia (green-blind)

#65749B

Tritanopia (blue-blind)

#008889

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f809b;
/* rgb */ color: rgb(63, 128, 155);
/* oklch */ color: oklch(56.8% 0.078 227.7);

Tailwind

colors: {
  custom: {
    50: '#7ca4b8',
    500: '#3f809b',
    950: '#000000',
  },
}

SCSS

$custom: #3f809b;
$custom-light: #7ca4b8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f809b",
  "rgb": {
    "r": 63,
    "g": 128,
    "b": 155
  },
  "hsl": {
    "h": 197.609,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.56833,
    "c": 0.07817,
    "h": 227.7
  },
  "luminance": 0.18862
}

Semantic roles & 50–950 ramp

primary

#3F809B

secondary

#B88F7D

accent

#7A56D2

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #3F809B

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

Preview Lab → · Contrast checker → · Palette generator →