#3B9ECB#3B9ECB

#3B9ECB is a light, moderate cyan. Relative luminance 0.297; OKLCH L 66.1% C 0.112 H 231.8°. Best body text is #000000 at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#3B9ECB
RGB	rgb(59, 158, 203)
HSL	hsl(199, 58%, 51%)
HSV	hsv(199, 71%, 80%)
CMYK	cmyk(70.9%, 22.2%, 0%, 20.4%)
CIE-LAB	lab(61.39, -14.04, -31.37)
CIE-LCH	lch(61.39, 34.37, 245.88°)
OKLab	oklab(66.1% -0.0693 -0.0881)
OKLCH	oklch(66.1% 0.112 231.8)
XYZ	xyz(24.8057, 29.6925, 60.9122)
Luminance	0.2969 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B9ECB #CB683B

analogous

#3BCBB0 #3B9ECB #3B56CB

triadic

#3B9ECB #CB3B9E #9ECB3B

tetradic

#3B9ECB #B03BCB #CB683B #56CB3B

square

#3B9ECB #B03BCB #CB683B #56CB3B

split-complementary

#3B9ECB #CB3B56 #CBB03B

monochromatic

#1D556E #2A7A9F #3B9ECB #6BB6D8 #9CCEE5

Accessibility & contrast

On white

3.03

#3B9ECB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.94

#3B9ECB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B9ECB

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B9ECB	#FFFFFF	#000000	##000000
##3B9ECB	1.00	3.03	6.94	6.94
#FFFFFF	3.03	1.00	21.00	21.00
#000000	6.94	21.00	1.00	1.00
##000000	6.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#879CCD

Deuteranopia (green-blind)

#748ECA

Tritanopia (blue-blind)

#00AAAD

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #3b9ecb;
/* rgb */ color: rgb(59, 158, 203);
/* oklch */ color: oklch(66.1% 0.112 231.8);

Tailwind

colors: {
  custom: {
    50: '#83badb',
    500: '#3b9ecb',
    950: '#000000',
  },
}

SCSS

$custom: #3b9ecb;
$custom-light: #83badb;
$custom-dark: #000000;

JSON

{
  "hex": "#3b9ecb",
  "rgb": {
    "r": 59,
    "g": 158,
    "b": 203
  },
  "hsl": {
    "h": 198.75,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.66104,
    "c": 0.11206,
    "h": 231.8
  },
  "luminance": 0.29695
}

Semantic roles & 50–950 ramp

primary

#3B9ECB

secondary

#D1A591

accent

#7747E1

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3B9ECB

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

Preview Lab → · Contrast checker → · Palette generator →