#3F9CD9#3F9CD9

#3F9CD9 is a light, vivid cyan. Relative luminance 0.298; OKLCH L 66.4% C 0.126 H 241.2°. Best body text is #000000 at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F9CD9
RGB	rgb(63, 156, 217)
HSL	hsl(204, 67%, 55%)
HSV	hsv(204, 71%, 85%)
CMYK	cmyk(71%, 28.1%, 0%, 14.9%)
CIE-LAB	lab(61.52, -7.65, -38.96)
CIE-LCH	lch(61.52, 39.71, 258.89°)
OKLab	oklab(66.44% -0.0605 -0.11)
OKLCH	oklch(66.44% 0.126 241.2)
XYZ	xyz(26.4579, 29.8405, 69.9976)
Luminance	0.2984 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9CD9 #D97C3F

analogous

#3FD9C9 #3F9CD9 #3F4FD9

triadic

#3F9CD9 #D93F9C #9CD93F

tetradic

#3F9CD9 #C93FD9 #D97C3F #4FD93F

square

#3F9CD9 #C93FD9 #D97C3F #4FD93F

split-complementary

#3F9CD9 #D93F4F #D9C93F

monochromatic

#1A5A84 #247DB7 #3F9CD9 #72B6E3 #A5D1ED

Accessibility & contrast

On white

3.01

#3F9CD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.97

#3F9CD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9CD9

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9CD9	#FFFFFF	#000000	##000000
##3F9CD9	1.00	3.01	6.97	6.97
#FFFFFF	3.01	1.00	21.00	21.00
#000000	6.97	21.00	1.00	1.00
##000000	6.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#809DDC

Deuteranopia (green-blind)

#6B8ED8

Tritanopia (blue-blind)

#00ABB1

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #3f9cd9;
/* rgb */ color: rgb(63, 156, 217);
/* oklch */ color: oklch(66.4% 0.126 241.2);

Tailwind

colors: {
  custom: {
    50: '#86b9e5',
    500: '#3f9cd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f9cd9;
$custom-light: #86b9e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9cd9",
  "rgb": {
    "r": 63,
    "g": 156,
    "b": 217
  },
  "hsl": {
    "h": 203.766,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.66436,
    "c": 0.12556,
    "h": 241.2
  },
  "luminance": 0.29843
}

Semantic roles & 50–950 ramp

primary

#3F9CD9

secondary

#DAB39A

accent

#823EEA

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0D1115

muted

#7D8084

Preview Lab

Preview with #3F9CD9

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

Preview Lab → · Contrast checker → · Palette generator →