#3F9BC5#3F9BC5

#3F9BC5 is a light, moderate cyan. Relative luminance 0.285; OKLCH L 65.2% C 0.106 H 231.4°. Best body text is #000000 at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BC5
RGB	rgb(63, 155, 197)
HSL	hsl(199, 54%, 51%)
HSV	hsv(199, 68%, 77%)
CMYK	cmyk(68%, 21.3%, 0%, 22.7%)
CIE-LAB	lab(60.36, -13.80, -29.59)
CIE-LCH	lch(60.36, 32.65, 244.99°)
OKLab	oklab(65.24% -0.0662 -0.083)
OKLCH	oklch(65.24% 0.106 231.4)
XYZ	xyz(23.8453, 28.5281, 57.0623)
Luminance	0.2853 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BC5 #C5693F

analogous

#3FC5AC #3F9BC5 #3F58C5

triadic

#3F9BC5 #C53F9B #9BC53F

tetradic

#3F9BC5 #AC3FC5 #C5693F #58C53F

square

#3F9BC5 #AC3FC5 #C5693F #58C53F

split-complementary

#3F9BC5 #C53F58 #C5AC3F

monochromatic

#20536A #2E7799 #3F9BC5 #6EB3D3 #9DCCE1

Accessibility & contrast

On white

3.13

#3F9BC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.71

#3F9BC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BC5

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BC5	#FFFFFF	#000000	##000000
##3F9BC5	1.00	3.13	6.71	6.71
#FFFFFF	3.13	1.00	21.00	21.00
#000000	6.71	21.00	1.00	1.00
##000000	6.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8699C7

Deuteranopia (green-blind)

#748CC4

Tritanopia (blue-blind)

#00A6A9

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #3f9bc5;
/* rgb */ color: rgb(63, 155, 197);
/* oklch */ color: oklch(65.2% 0.106 231.4);

Tailwind

colors: {
  custom: {
    50: '#83b8d6',
    500: '#3f9bc5',
    950: '#000000',
  },
}

SCSS

$custom: #3f9bc5;
$custom-light: #83b8d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9bc5",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 197
  },
  "hsl": {
    "h": 198.806,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.65237,
    "c": 0.10613,
    "h": 231.4
  },
  "luminance": 0.28531
}

Semantic roles & 50–950 ramp

primary

#3F9BC5

secondary

#CEA592

accent

#794BDD

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #3F9BC5

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

Preview Lab → · Contrast checker → · Palette generator →