#3F9BBB#3F9BBB

#3F9BBB is a light, moderate cyan. Relative luminance 0.281; OKLCH L 64.8% C 0.098 H 224.5°. Best body text is #000000 at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BBB
RGB	rgb(63, 155, 187)
HSL	hsl(195, 50%, 49%)
HSV	hsv(195, 66%, 73%)
CMYK	cmyk(66.3%, 17.1%, 0%, 26.7%)
CIE-LAB	lab(59.97, -17.05, -24.58)
CIE-LCH	lch(59.97, 29.91, 235.25°)
OKLab	oklab(64.79% -0.0699 -0.0686)
OKLCH	oklch(64.79% 0.098 224.5)
XYZ	xyz(22.7373, 28.0849, 51.2267)
Luminance	0.2809 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BBB #BB5F3F

analogous

#3FBB9D #3F9BBB #3F5DBB

triadic

#3F9BBB #BB3F9B #9BBB3F

tetradic

#3F9BBB #9D3FBB #BB5F3F #5DBB3F

square

#3F9BBB #9D3FBB #BB5F3F #5DBB3F

split-complementary

#3F9BBB #BB3F5D #BB9D3F

monochromatic

#204F5F #30758D #3F9BBB #6AB3CD #98CBDC

Accessibility & contrast

On white

3.17

#3F9BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.62

#3F9BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BBB

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BBB	#FFFFFF	#000000	##000000
##3F9BBB	1.00	3.17	6.62	6.62
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.62	21.00	1.00	1.00
##000000	6.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8998BD

Deuteranopia (green-blind)

#788BBB

Tritanopia (blue-blind)

#00A5A5

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #3f9bbb;
/* rgb */ color: rgb(63, 155, 187);
/* oklch */ color: oklch(64.8% 0.098 224.5);

Tailwind

colors: {
  custom: {
    50: '#82b8cf',
    500: '#3f9bbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f9bbb;
$custom-light: #82b8cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9bbb",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 187
  },
  "hsl": {
    "h": 195.484,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.64788,
    "c": 0.09795,
    "h": 224.5
  },
  "luminance": 0.28087
}

Semantic roles & 50–950 ramp

primary

#3F9BBB

secondary

#C89D8E

accent

#724FD9

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1113

muted

#7D8082

Preview Lab

Preview with #3F9BBB

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

Preview Lab → · Contrast checker → · Palette generator →