#3F8FD9#3F8FD9

#3F8FD9 is a light, vivid cyan. Relative luminance 0.257; OKLCH L 63.5% C 0.136 H 249.3°. Best body text is #000000 at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#3F8FD9
RGB	rgb(63, 143, 217)
HSL	hsl(209, 67%, 55%)
HSV	hsv(209, 71%, 85%)
CMYK	cmyk(71%, 34.1%, 0%, 14.9%)
CIE-LAB	lab(57.76, -0.19, -44.87)
CIE-LCH	lch(57.76, 44.87, 269.76°)
OKLab	oklab(63.47% -0.048 -0.1274)
OKLCH	oklch(63.47% 0.136 249.3)
XYZ	xyz(24.3920, 25.7088, 69.3090)
Luminance	0.2571 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8FD9 #D9893F

analogous

#3FD9D6 #3F8FD9 #3F42D9

triadic

#3F8FD9 #D93F8F #8FD93F

tetradic

#3F8FD9 #D63FD9 #D9893F #42D93F

square

#3F8FD9 #D63FD9 #D9893F #42D93F

split-complementary

#3F8FD9 #D93F42 #D9D63F

monochromatic

#1A5184 #2470B7 #3F8FD9 #72ADE3 #A5CBED

Accessibility & contrast

On white

3.42

#3F8FD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.14

#3F8FD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8FD9

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8FD9	#FFFFFF	#000000	##000000
##3F8FD9	1.00	3.42	6.14	6.14
#FFFFFF	3.42	1.00	21.00	21.00
#000000	6.14	21.00	1.00	1.00
##000000	6.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E93DC

Deuteranopia (green-blind)

#5884D8

Tritanopia (blue-blind)

#00A1AA

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #3f8fd9;
/* rgb */ color: rgb(63, 143, 217);
/* oklch */ color: oklch(63.5% 0.136 249.3);

Tailwind

colors: {
  custom: {
    50: '#86afe5',
    500: '#3f8fd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f8fd9;
$custom-light: #86afe5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8fd9",
  "rgb": {
    "r": 63,
    "g": 143,
    "b": 217
  },
  "hsl": {
    "h": 208.831,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.63474,
    "c": 0.13616,
    "h": 249.3
  },
  "luminance": 0.25711
}

Semantic roles & 50–950 ramp

primary

#3F8FD9

secondary

#DAB99A

accent

#913EEA

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1016

muted

#7D7F84

Preview Lab

Preview with #3F8FD9

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

Preview Lab → · Contrast checker → · Palette generator →