#3F748E#3F748E

#3F748E is a mid, moderate cyan. Relative luminance 0.155; OKLCH L 53.3% C 0.070 H 231.4°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F748E
RGB	rgb(63, 116, 142)
HSL	hsl(200, 39%, 40%)
HSV	hsv(200, 56%, 56%)
CMYK	cmyk(55.6%, 18.3%, 0%, 44.3%)
CIE-LAB	lab(46.31, -9.81, -19.57)
CIE-LCH	lch(46.31, 21.89, 243.38°)
OKLab	oklab(53.31% -0.0435 -0.0545)
OKLCH	oklch(53.31% 0.07 231.4)
XYZ	xyz(13.1759, 15.4994, 27.8833)
Luminance	0.1550 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F748E #8E593F

analogous

#3F8E81 #3F748E #3F4C8E

triadic

#3F748E #8E3F74 #748E3F

tetradic

#3F748E #813F8E #8E593F #4C8E3F

square

#3F748E #813F8E #8E593F #4C8E3F

split-complementary

#3F748E #8E3F4C #8E813F

monochromatic

#192F39 #2C5164 #3F748E #5695B4 #81B0C7

Accessibility & contrast

On white

5.12

#3F748E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#3F748E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F748E

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F748E	#FFFFFF	#000000	##FFFFFF
##3F748E	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#67738F

Deuteranopia (green-blind)

#5C6A8E

Tritanopia (blue-blind)

#027B7C

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3f748e;
/* rgb */ color: rgb(63, 116, 142);
/* oklch */ color: oklch(53.3% 0.070 231.4);

Tailwind

colors: {
  custom: {
    50: '#7a9caf',
    500: '#3f748e',
    950: '#000000',
  },
}

SCSS

$custom: #3f748e;
$custom-light: #7a9caf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f748e",
  "rgb": {
    "r": 63,
    "g": 116,
    "b": 142
  },
  "hsl": {
    "h": 199.747,
    "s": 38.537,
    "l": 40.196
  },
  "oklch": {
    "l": 0.53307,
    "c": 0.06972,
    "h": 231.4
  },
  "luminance": 0.15501
}

Semantic roles & 50–950 ramp

primary

#3F748E

secondary

#B18B78

accent

#8059CE

background

#F7F9FA

surface

#EEF2F4

border

#C9CCCE

text

#0A0E10

muted

#7C7E7F

Preview Lab

Preview with #3F748E

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

Preview Lab → · Contrast checker → · Palette generator →