#3F9DCB#3F9DCB

#3F9DCB is a light, moderate cyan. Relative luminance 0.295; OKLCH L 66.0% C 0.111 H 233.4°. Best body text is #000000 at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F9DCB
RGB	rgb(63, 157, 203)
HSL	hsl(200, 57%, 52%)
HSV	hsv(200, 69%, 80%)
CMYK	cmyk(69%, 22.7%, 0%, 20.4%)
CIE-LAB	lab(61.20, -12.92, -31.65)
CIE-LCH	lch(61.20, 34.18, 247.80°)
OKLab	oklab(65.99% -0.0661 -0.0889)
OKLCH	oklch(65.99% 0.111 233.4)
XYZ	xyz(24.8821, 29.4798, 60.8672)
Luminance	0.2948 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9DCB #CB6D3F

analogous

#3FCBB3 #3F9DCB #3F57CB

triadic

#3F9DCB #CB3F9D #9DCB3F

tetradic

#3F9DCB #B33FCB #CB6D3F #57CB3F

square

#3F9DCB #B33FCB #CB6D3F #57CB3F

split-complementary

#3F9DCB #CB3F57 #CBB33F

monochromatic

#1F5671 #2C7BA1 #3F9DCB #6FB6D8 #9FCEE5

Accessibility & contrast

On white

3.04

#3F9DCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.90

#3F9DCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9DCB

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9DCB	#FFFFFF	#000000	##000000
##3F9DCB	1.00	3.04	6.90	6.90
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.90	21.00	1.00	1.00
##000000	6.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#869BCD

Deuteranopia (green-blind)

#738ECA

Tritanopia (blue-blind)

#00A9AC

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #3f9dcb;
/* rgb */ color: rgb(63, 157, 203);
/* oklch */ color: oklch(66.0% 0.111 233.4);

Tailwind

colors: {
  custom: {
    50: '#84b9db',
    500: '#3f9dcb',
    950: '#000000',
  },
}

SCSS

$custom: #3f9dcb;
$custom-light: #84b9db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9dcb",
  "rgb": {
    "r": 63,
    "g": 157,
    "b": 203
  },
  "hsl": {
    "h": 199.714,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.65988,
    "c": 0.11075,
    "h": 233.4
  },
  "luminance": 0.29483
}

Semantic roles & 50–950 ramp

primary

#3F9DCB

secondary

#D1A894

accent

#7A47E1

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3F9DCB

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

Preview Lab → · Contrast checker → · Palette generator →