#3F9BE0#3F9BE0

#3F9BE0 is a light, vivid cyan. Relative luminance 0.299; OKLCH L 66.6% C 0.134 H 244.7°. Best body text is #000000 at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BE0
RGB	rgb(63, 155, 224)
HSL	hsl(206, 72%, 56%)
HSV	hsv(206, 72%, 88%)
CMYK	cmyk(71.9%, 30.8%, 0%, 12.2%)
CIE-LAB	lab(61.55, -4.69, -42.80)
CIE-LCH	lch(61.55, 43.05, 263.75°)
OKLab	oklab(66.57% -0.0574 -0.1212)
OKLCH	oklch(66.57% 0.134 244.7)
XYZ	xyz(27.2206, 29.8782, 74.8390)
Luminance	0.2988 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BE0 #E0843F

analogous

#3FE0D4 #3F9BE0 #3F4BE0

triadic

#3F9BE0 #E03F9B #9BE03F

tetradic

#3F9BE0 #D43FE0 #E0843F #4BE03F

square

#3F9BE0 #D43FE0 #E0843F #4BE03F

split-complementary

#3F9BE0 #E03F4B #E0D43F

monochromatic

#175B8E #1F7DC2 #3F9BE0 #74B6E9 #A8D2F1

Accessibility & contrast

On white

3.01

#3F9BE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.98

#3F9BE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BE0

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BE0	#FFFFFF	#000000	##000000
##3F9BE0	1.00	3.01	6.98	6.98
#FFFFFF	3.01	1.00	21.00	21.00
#000000	6.98	21.00	1.00	1.00
##000000	6.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C9DE3

Deuteranopia (green-blind)

#658EDF

Tritanopia (blue-blind)

#00ACB3

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #3f9be0;
/* rgb */ color: rgb(63, 155, 224);
/* oklch */ color: oklch(66.6% 0.134 244.7);

Tailwind

colors: {
  custom: {
    50: '#87b8ea',
    500: '#3f9be0',
    950: '#000000',
  },
}

SCSS

$custom: #3f9be0;
$custom-light: #87b8ea;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9be0",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 224
  },
  "hsl": {
    "h": 205.714,
    "s": 72.197,
    "l": 56.275
  },
  "oklch": {
    "l": 0.66568,
    "c": 0.1341,
    "h": 244.7
  },
  "luminance": 0.29881
}

Semantic roles & 50–950 ramp

primary

#3F9BE0

secondary

#DFB99C

accent

#8739EF

background

#F9FBFE

surface

#F1F6FD

border

#CBD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #3F9BE0

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

Preview Lab → · Contrast checker → · Palette generator →