#3F99E0#3F99E0

#3F99E0 is a light, vivid cyan. Relative luminance 0.292; OKLCH L 66.1% C 0.136 H 245.9°. Best body text is #000000 at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F99E0
RGB	rgb(63, 153, 224)
HSL	hsl(206, 72%, 56%)
HSV	hsv(206, 72%, 88%)
CMYK	cmyk(71.9%, 31.7%, 0%, 12.2%)
CIE-LAB	lab(60.97, -3.54, -43.70)
CIE-LCH	lch(60.97, 43.85, 265.36°)
OKLab	oklab(66.11% -0.0555 -0.1239)
OKLCH	oklch(66.11% 0.136 245.9)
XYZ	xyz(26.8905, 29.2180, 74.7290)
Luminance	0.2922 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99E0 #E0863F

analogous

#3FE0D7 #3F99E0 #3F49E0

triadic

#3F99E0 #E03F99 #99E03F

tetradic

#3F99E0 #D73FE0 #E0863F #49E03F

square

#3F99E0 #D73FE0 #E0863F #49E03F

split-complementary

#3F99E0 #E03F49 #E0D73F

monochromatic

#17598E #1F7BC2 #3F99E0 #74B5E9 #A8D1F1

Accessibility & contrast

On white

3.07

#3F99E0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.84

#3F99E0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99E0

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99E0	#FFFFFF	#000000	##000000
##3F99E0	1.00	3.07	6.84	6.84
#FFFFFF	3.07	1.00	21.00	21.00
#000000	6.84	21.00	1.00	1.00
##000000	6.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#799CE3

Deuteranopia (green-blind)

#628CDF

Tritanopia (blue-blind)

#00AAB2

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #3f99e0;
/* rgb */ color: rgb(63, 153, 224);
/* oklch */ color: oklch(66.1% 0.136 245.9);

Tailwind

colors: {
  custom: {
    50: '#87b6ea',
    500: '#3f99e0',
    950: '#000000',
  },
}

SCSS

$custom: #3f99e0;
$custom-light: #87b6ea;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99e0",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 224
  },
  "hsl": {
    "h": 206.46,
    "s": 72.197,
    "l": 56.275
  },
  "oklch": {
    "l": 0.66114,
    "c": 0.13574,
    "h": 245.9
  },
  "luminance": 0.29221
}

Semantic roles & 50–950 ramp

primary

#3F99E0

secondary

#DFB99C

accent

#8939EF

background

#F9FBFE

surface

#F1F6FD

border

#CBD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #3F99E0

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

Preview Lab → · Contrast checker → · Palette generator →