#3F789E#3F789E

#3F789E is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.0% C 0.084 H 239.9°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F789E
RGB	rgb(63, 120, 158)
HSL	hsl(204, 43%, 43%)
HSV	hsv(204, 60%, 62%)
CMYK	cmyk(60.1%, 24.1%, 0%, 38%)
CIE-LAB	lab(48.21, -6.93, -26.08)
CIE-LCH	lch(48.21, 26.98, 255.11°)
OKLab	oklab(55.03% -0.0423 -0.0731)
OKLCH	oklch(55.03% 0.084 239.9)
XYZ	xyz(14.9356, 16.9569, 34.8270)
Luminance	0.1696 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F789E #9E653F

analogous

#3F9E94 #3F789E #3F489E

triadic

#3F789E #9E3F78 #789E3F

tetradic

#3F789E #943F9E #9E653F #489E3F

square

#3F789E #943F9E #9E653F #489E3F

split-complementary

#3F789E #9E3F48 #9E943F

monochromatic

#1C3646 #2E5772 #3F789E #5C97BE #88B3D0

Accessibility & contrast

On white

4.78

#3F789E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#3F789E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F789E

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F789E	#FFFFFF	#000000	##FFFFFF
##3F789E	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6778A0

Deuteranopia (green-blind)

#5A6E9D

Tritanopia (blue-blind)

#008285

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f789e;
/* rgb */ color: rgb(63, 120, 158);
/* oklch */ color: oklch(55.0% 0.084 239.9);

Tailwind

colors: {
  custom: {
    50: '#7c9eba',
    500: '#3f789e',
    950: '#000000',
  },
}

SCSS

$custom: #3f789e;
$custom-light: #7c9eba;
$custom-dark: #000000;

JSON

{
  "hex": "#3f789e",
  "rgb": {
    "r": 63,
    "g": 120,
    "b": 158
  },
  "hsl": {
    "h": 204,
    "s": 42.986,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55032,
    "c": 0.08444,
    "h": 239.9
  },
  "luminance": 0.16958
}

Semantic roles & 50–950 ramp

primary

#3F789E

secondary

#BA967F

accent

#8755D3

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #3F789E

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

Preview Lab → · Contrast checker → · Palette generator →