#3F9BC8#3F9BC8

#3F9BC8 is a light, moderate cyan. Relative luminance 0.287; OKLCH L 65.4% C 0.109 H 233.3°. Best body text is #000000 at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BC8
RGB	rgb(63, 155, 200)
HSL	hsl(200, 55%, 52%)
HSV	hsv(200, 69%, 78%)
CMYK	cmyk(68.5%, 22.5%, 0%, 21.6%)
CIE-LAB	lab(60.49, -12.81, -31.08)
CIE-LCH	lch(60.49, 33.62, 247.60°)
OKLab	oklab(65.38% -0.0651 -0.0873)
OKLCH	oklch(65.38% 0.109 233.3)
XYZ	xyz(24.1925, 28.6669, 58.8907)
Luminance	0.2867 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BC8 #C86C3F

analogous

#3FC8B1 #3F9BC8 #3F57C8

triadic

#3F9BC8 #C83F9B #9BC83F

tetradic

#3F9BC8 #B13FC8 #C86C3F #57C83F

square

#3F9BC8 #B13FC8 #C86C3F #57C83F

split-complementary

#3F9BC8 #C83F57 #C8B13F

monochromatic

#1F546D #2D789D #3F9BC8 #6FB4D6 #9ECDE3

Accessibility & contrast

On white

3.12

#3F9BC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.73

#3F9BC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BC8

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BC8	#FFFFFF	#000000	##000000
##3F9BC8	1.00	3.12	6.73	6.73
#FFFFFF	3.12	1.00	21.00	21.00
#000000	6.73	21.00	1.00	1.00
##000000	6.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8599CA

Deuteranopia (green-blind)

#728CC7

Tritanopia (blue-blind)

#00A7AA

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #3f9bc8;
/* rgb */ color: rgb(63, 155, 200);
/* oklch */ color: oklch(65.4% 0.109 233.3);

Tailwind

colors: {
  custom: {
    50: '#84b8d9',
    500: '#3f9bc8',
    950: '#000000',
  },
}

SCSS

$custom: #3f9bc8;
$custom-light: #84b8d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9bc8",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 200
  },
  "hsl": {
    "h": 199.708,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.65376,
    "c": 0.10888,
    "h": 233.3
  },
  "luminance": 0.2867
}

Semantic roles & 50–950 ramp

primary

#3F9BC8

secondary

#D0A793

accent

#7A49DF

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #3F9BC8

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

Preview Lab → · Contrast checker → · Palette generator →