#3F8CD9#3F8CD9

#3F8CD9 is a light, vivid cyan. Relative luminance 0.248; OKLCH L 62.8% C 0.139 H 251.0°. Best body text is #000000 at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F8CD9
RGB	rgb(63, 140, 217)
HSL	hsl(210, 67%, 55%)
HSV	hsv(210, 71%, 85%)
CMYK	cmyk(71%, 35.5%, 0%, 14.9%)
CIE-LAB	lab(56.90, 1.58, -46.23)
CIE-LCH	lch(56.90, 46.26, 271.95°)
OKLab	oklab(62.8% -0.0452 -0.1314)
OKLCH	oklch(62.8% 0.139 251)
XYZ	xyz(23.9477, 24.8201, 69.1608)
Luminance	0.2482 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8CD9 #D98C3F

analogous

#3FD9D9 #3F8CD9 #3F3FD9

triadic

#3F8CD9 #D93F8C #8CD93F

tetradic

#3F8CD9 #D93FD9 #D98C3F #3FD93F

square

#3F8CD9 #D93FD9 #D98C3F #3FD93F

split-complementary

#3F8CD9 #D93F3F #D9D93F

monochromatic

#1A4F84 #246DB7 #3F8CD9 #72ABE3 #A5C9ED

Accessibility & contrast

On white

3.52

#3F8CD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.96

#3F8CD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8CD9

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8CD9	#FFFFFF	#000000	##000000
##3F8CD9	1.00	3.52	5.96	5.96
#FFFFFF	3.52	1.00	21.00	21.00
#000000	5.96	21.00	1.00	1.00
##000000	5.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6990DC

Deuteranopia (green-blind)

#5382D7

Tritanopia (blue-blind)

#009EA8

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3f8cd9;
/* rgb */ color: rgb(63, 140, 217);
/* oklch */ color: oklch(62.8% 0.139 251.0);

Tailwind

colors: {
  custom: {
    50: '#86ade5',
    500: '#3f8cd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f8cd9;
$custom-light: #86ade5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8cd9",
  "rgb": {
    "r": 63,
    "g": 140,
    "b": 217
  },
  "hsl": {
    "h": 210,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.62799,
    "c": 0.13898,
    "h": 251
  },
  "luminance": 0.24823
}

Semantic roles & 50–950 ramp

primary

#3F8CD9

secondary

#DABA9A

accent

#943EEA

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1016

muted

#7D7F84

Preview Lab

Preview with #3F8CD9

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

Preview Lab → · Contrast checker → · Palette generator →