#3B99CB#3B99CB

#3B99CB is a light, moderate cyan. Relative luminance 0.280; OKLCH L 64.9% C 0.115 H 235.8°. Best body text is #000000 at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#3B99CB
RGB	rgb(59, 153, 203)
HSL	hsl(201, 58%, 51%)
HSV	hsv(201, 71%, 80%)
CMYK	cmyk(70.9%, 24.6%, 0%, 20.4%)
CIE-LAB	lab(59.91, -11.29, -33.67)
CIE-LCH	lch(59.91, 35.51, 251.46°)
OKLab	oklab(64.93% -0.0643 -0.0948)
OKLCH	oklch(64.93% 0.115 235.8)
XYZ	xyz(23.9701, 28.0214, 60.6337)
Luminance	0.2802 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B99CB #CB6D3B

analogous

#3BCBB5 #3B99CB #3B51CB

triadic

#3B99CB #CB3B99 #99CB3B

tetradic

#3B99CB #B53BCB #CB6D3B #51CB3B

square

#3B99CB #B53BCB #CB6D3B #51CB3B

split-complementary

#3B99CB #CB3B51 #CBB53B

monochromatic

#1D526E #2A769F #3B99CB #6BB2D8 #9CCBE5

Accessibility & contrast

On white

3.18

#3B99CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.60

#3B99CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B99CB

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B99CB	#FFFFFF	#000000	##000000
##3B99CB	1.00	3.18	6.60	6.60
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.60	21.00	1.00	1.00
##000000	6.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8198CD

Deuteranopia (green-blind)

#6D8ACA

Tritanopia (blue-blind)

#00A6AA

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #3b99cb;
/* rgb */ color: rgb(59, 153, 203);
/* oklch */ color: oklch(64.9% 0.115 235.8);

Tailwind

colors: {
  custom: {
    50: '#83b7db',
    500: '#3b99cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b99cb;
$custom-light: #83b7db;
$custom-dark: #000000;

JSON

{
  "hex": "#3b99cb",
  "rgb": {
    "r": 59,
    "g": 153,
    "b": 203
  },
  "hsl": {
    "h": 200.833,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.64925,
    "c": 0.11453,
    "h": 235.8
  },
  "luminance": 0.28024
}

Semantic roles & 50–950 ramp

primary

#3B99CB

secondary

#D1A791

accent

#7C47E1

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3B99CB

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

Preview Lab → · Contrast checker → · Palette generator →