#3F9BBF#3F9BBF

#3F9BBF is a light, moderate cyan. Relative luminance 0.283; OKLCH L 65.0% C 0.101 H 227.4°. Best body text is #000000 at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BBF
RGB	rgb(63, 155, 191)
HSL	hsl(197, 50%, 50%)
HSV	hsv(197, 67%, 75%)
CMYK	cmyk(67%, 18.8%, 0%, 25.1%)
CIE-LAB	lab(60.12, -15.76, -26.59)
CIE-LCH	lch(60.12, 30.91, 239.34°)
OKLab	oklab(64.96% -0.0684 -0.0744)
OKLCH	oklch(64.96% 0.101 227.4)
XYZ	xyz(23.1715, 28.2585, 53.5134)
Luminance	0.2826 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BBF #BF633F

analogous

#3FBFA3 #3F9BBF #3F5BBF

triadic

#3F9BBF #BF3F9B #9BBF3F

tetradic

#3F9BBF #A33FBF #BF633F #5BBF3F

square

#3F9BBF #A33FBF #BF633F #5BBF3F

split-complementary

#3F9BBF #BF3F5B #BFA33F

monochromatic

#215063 #307691 #3F9BBF #6DB3CF #9BCBDE

Accessibility & contrast

On white

3.16

#3F9BBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.65

#3F9BBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BBF

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BBF	#FFFFFF	#000000	##000000
##3F9BBF	1.00	3.16	6.65	6.65
#FFFFFF	3.16	1.00	21.00	21.00
#000000	6.65	21.00	1.00	1.00
##000000	6.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8898C1

Deuteranopia (green-blind)

#768BBF

Tritanopia (blue-blind)

#00A5A7

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #3f9bbf;
/* rgb */ color: rgb(63, 155, 191);
/* oklch */ color: oklch(65.0% 0.101 227.4);

Tailwind

colors: {
  custom: {
    50: '#83b8d2',
    500: '#3f9bbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f9bbf;
$custom-light: #83b8d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9bbf",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 191
  },
  "hsl": {
    "h": 196.875,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.64964,
    "c": 0.10103,
    "h": 227.4
  },
  "luminance": 0.28261
}

Semantic roles & 50–950 ramp

primary

#3F9BBF

secondary

#CAA090

accent

#754EDA

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1114

muted

#7D8082

Preview Lab

Preview with #3F9BBF

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

Preview Lab → · Contrast checker → · Palette generator →