#3F749C#3F749C

#3F749C is a mid, moderate cyan. Relative luminance 0.159; OKLCH L 54.0% C 0.085 H 243.0°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F749C
RGB	rgb(63, 116, 156)
HSL	hsl(206, 42%, 43%)
HSV	hsv(206, 60%, 61%)
CMYK	cmyk(59.6%, 25.6%, 0%, 38.8%)
CIE-LAB	lab(46.90, -5.25, -26.93)
CIE-LCH	lch(46.90, 27.43, 258.97°)
OKLab	oklab(53.97% -0.0384 -0.0755)
OKLCH	oklch(53.97% 0.085 243)
XYZ	xyz(14.2938, 15.9465, 33.7708)
Luminance	0.1595 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F749C #9C673F

analogous

#3F9C95 #3F749C #3F469C

triadic

#3F749C #9C3F74 #749C3F

tetradic

#3F749C #953F9C #9C673F #469C3F

square

#3F749C #953F9C #9C673F #469C3F

split-complementary

#3F749C #9C3F46 #9C953F

monochromatic

#1C3345 #2D5470 #3F749C #5B93BD #87B0CE

Accessibility & contrast

On white

5.01

#3F749C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#3F749C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F749C

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F749C	#FFFFFF	#000000	##FFFFFF
##3F749C	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#62749E

Deuteranopia (green-blind)

#566B9B

Tritanopia (blue-blind)

#007E82

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f749c;
/* rgb */ color: rgb(63, 116, 156);
/* oklch */ color: oklch(54.0% 0.085 243.0);

Tailwind

colors: {
  custom: {
    50: '#7c9bb9',
    500: '#3f749c',
    950: '#000000',
  },
}

SCSS

$custom: #3f749c;
$custom-light: #7c9bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f749c",
  "rgb": {
    "r": 63,
    "g": 116,
    "b": 156
  },
  "hsl": {
    "h": 205.806,
    "s": 42.466,
    "l": 42.941
  },
  "oklch": {
    "l": 0.53974,
    "c": 0.08474,
    "h": 243
  },
  "luminance": 0.15948
}

Semantic roles & 50–950 ramp

primary

#3F749C

secondary

#B9977E

accent

#8B56D2

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #3F749C

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

Preview Lab → · Contrast checker → · Palette generator →