#3F9BD3#3F9BD3

#3F9BD3 is a light, moderate cyan. Relative luminance 0.292; OKLCH L 65.9% C 0.120 H 239.2°. Best body text is #000000 at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BD3
RGB	rgb(63, 155, 211)
HSL	hsl(203, 63%, 54%)
HSV	hsv(203, 70%, 83%)
CMYK	cmyk(70.1%, 26.5%, 0%, 17.3%)
CIE-LAB	lab(60.96, -9.13, -36.50)
CIE-LCH	lch(60.96, 37.62, 255.96°)
OKLab	oklab(65.91% -0.0614 -0.1029)
OKLCH	oklch(65.91% 0.12 239.2)
XYZ	xyz(25.5245, 29.1998, 65.9063)
Luminance	0.2920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BD3 #D3773F

analogous

#3FD3C1 #3F9BD3 #3F51D3

triadic

#3F9BD3 #D33F9B #9BD33F

tetradic

#3F9BD3 #C13FD3 #D3773F #51D33F

square

#3F9BD3 #C13FD3 #D3773F #51D33F

split-complementary

#3F9BD3 #D33F51 #D3C13F

monochromatic

#1C577B #287BAD #3F9BD3 #71B5DE #A3CFEA

Accessibility & contrast

On white

3.07

#3F9BD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.84

#3F9BD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BD3

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BD3	#FFFFFF	#000000	##000000
##3F9BD3	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)

#819BD6

Deuteranopia (green-blind)

#6D8DD2

Tritanopia (blue-blind)

#00A9AE

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #3f9bd3;
/* rgb */ color: rgb(63, 155, 211);
/* oklch */ color: oklch(65.9% 0.120 239.2);

Tailwind

colors: {
  custom: {
    50: '#85b8e0',
    500: '#3f9bd3',
    950: '#000000',
  },
}

SCSS

$custom: #3f9bd3;
$custom-light: #85b8e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9bd3",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 211
  },
  "hsl": {
    "h": 202.703,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.65906,
    "c": 0.11983,
    "h": 239.2
  },
  "luminance": 0.29203
}

Semantic roles & 50–950 ramp

primary

#3F9BD3

secondary

#D7AF97

accent

#8042E6

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3F9BD3

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

Preview Lab → · Contrast checker → · Palette generator →