#3F749D#3F749D

#3F749D is a mid, moderate cyan. Relative luminance 0.160; OKLCH L 54.0% C 0.086 H 243.7°. Best body text is #FFFFFF at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F749D
RGB	rgb(63, 116, 157)
HSL	hsl(206, 43%, 43%)
HSV	hsv(206, 60%, 62%)
CMYK	cmyk(59.9%, 26.1%, 0%, 38.4%)
CIE-LAB	lab(46.95, -4.91, -27.44)
CIE-LCH	lch(46.95, 27.88, 259.85°)
OKLab	oklab(54.02% -0.0381 -0.077)
OKLCH	oklch(54.02% 0.086 243.7)
XYZ	xyz(14.3788, 15.9805, 34.2186)
Luminance	0.1598 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F749D #9D683F

analogous

#3F9D97 #3F749D #3F459D

triadic

#3F749D #9D3F74 #749D3F

tetradic

#3F749D #973F9D #9D683F #459D3F

square

#3F749D #973F9D #9D683F #459D3F

split-complementary

#3F749D #9D3F45 #9D973F

monochromatic

#1C3346 #2D5471 #3F749D #5C93BD #87B0CF

Accessibility & contrast

On white

5.00

#3F749D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#3F749D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F749D

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F749D	#FFFFFF	#000000	##FFFFFF
##3F749D	1.00	5.00	4.20	5.00
#FFFFFF	5.00	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#62759F

Deuteranopia (green-blind)

#556B9C

Tritanopia (blue-blind)

#007E82

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f749d;
/* rgb */ color: rgb(63, 116, 157);
/* oklch */ color: oklch(54.0% 0.086 243.7);

Tailwind

colors: {
  custom: {
    50: '#7c9bba',
    500: '#3f749d',
    950: '#000000',
  },
}

SCSS

$custom: #3f749d;
$custom-light: #7c9bba;
$custom-dark: #000000;

JSON

{
  "hex": "#3f749d",
  "rgb": {
    "r": 63,
    "g": 116,
    "b": 157
  },
  "hsl": {
    "h": 206.17,
    "s": 42.727,
    "l": 43.137
  },
  "oklch": {
    "l": 0.54024,
    "c": 0.08592,
    "h": 243.7
  },
  "luminance": 0.15982
}

Semantic roles & 50–950 ramp

primary

#3F749D

secondary

#BA987E

accent

#8C55D3

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #3F749D

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

Preview Lab → · Contrast checker → · Palette generator →