#3F799D#3F799D

#3F799D is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.2% C 0.083 H 238.0°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F799D
RGB	rgb(63, 121, 157)
HSL	hsl(203, 43%, 43%)
HSV	hsv(203, 60%, 62%)
CMYK	cmyk(59.9%, 22.9%, 0%, 38.4%)
CIE-LAB	lab(48.47, -7.85, -25.09)
CIE-LCH	lch(48.47, 26.29, 252.63°)
OKLab	oklab(55.23% -0.0438 -0.0702)
OKLCH	oklch(55.23% 0.083 238)
XYZ	xyz(14.9708, 17.1644, 34.4159)
Luminance	0.1717 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F799D #9D633F

analogous

#3F9D92 #3F799D #3F4A9D

triadic

#3F799D #9D3F79 #799D3F

tetradic

#3F799D #923F9D #9D633F #4A9D3F

square

#3F799D #923F9D #9D633F #4A9D3F

split-complementary

#3F799D #9D3F4A #9D923F

monochromatic

#1C3646 #2D5771 #3F799D #5C98BD #87B4CF

Accessibility & contrast

On white

4.74

#3F799D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#3F799D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F799D

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F799D	#FFFFFF	#000000	##FFFFFF
##3F799D	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#68789F

Deuteranopia (green-blind)

#5C6F9C

Tritanopia (blue-blind)

#008285

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f799d;
/* rgb */ color: rgb(63, 121, 157);
/* oklch */ color: oklch(55.2% 0.083 238.0);

Tailwind

colors: {
  custom: {
    50: '#7c9fba',
    500: '#3f799d',
    950: '#000000',
  },
}

SCSS

$custom: #3f799d;
$custom-light: #7c9fba;
$custom-dark: #000000;

JSON

{
  "hex": "#3f799d",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 157
  },
  "hsl": {
    "h": 202.979,
    "s": 42.727,
    "l": 43.137
  },
  "oklch": {
    "l": 0.55225,
    "c": 0.08277,
    "h": 238
  },
  "luminance": 0.17166
}

Semantic roles & 50–950 ramp

primary

#3F799D

secondary

#BA957E

accent

#8555D3

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #3F799D

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

Preview Lab → · Contrast checker → · Palette generator →