#3F779B#3F779B

#3F779B is a mid, moderate cyan. Relative luminance 0.166; OKLCH L 54.6% C 0.082 H 238.9°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F779B
RGB	rgb(63, 119, 155)
HSL	hsl(203, 42%, 43%)
HSV	hsv(203, 59%, 61%)
CMYK	cmyk(59.4%, 23.2%, 0%, 39.2%)
CIE-LAB	lab(47.77, -7.34, -24.99)
CIE-LCH	lch(47.77, 26.05, 253.63°)
OKLab	oklab(54.65% -0.0422 -0.0699)
OKLCH	oklch(54.65% 0.082 238.9)
XYZ	xyz(14.5609, 16.6156, 33.4438)
Luminance	0.1662 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F779B #9B633F

analogous

#3F9B91 #3F779B #3F499B

triadic

#3F779B #9B3F77 #779B3F

tetradic

#3F779B #913F9B #9B633F #499B3F

square

#3F779B #913F9B #9B633F #499B3F

split-complementary

#3F779B #9B3F49 #9B913F

monochromatic

#1C3444 #2D566F #3F779B #5B96BC #86B2CE

Accessibility & contrast

On white

4.86

#3F779B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#3F779B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F779B

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F779B	#FFFFFF	#000000	##FFFFFF
##3F779B	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#67779D

Deuteranopia (green-blind)

#5A6D9A

Tritanopia (blue-blind)

#008083

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f779b;
/* rgb */ color: rgb(63, 119, 155);
/* oklch */ color: oklch(54.6% 0.082 238.9);

Tailwind

colors: {
  custom: {
    50: '#7c9eb8',
    500: '#3f779b',
    950: '#000000',
  },
}

SCSS

$custom: #3f779b;
$custom-light: #7c9eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f779b",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 155
  },
  "hsl": {
    "h": 203.478,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.54646,
    "c": 0.08171,
    "h": 238.9
  },
  "luminance": 0.16617
}

Semantic roles & 50–950 ramp

primary

#3F779B

secondary

#B8947D

accent

#8656D2

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #3F779B

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

Preview Lab → · Contrast checker → · Palette generator →