#4099D3#4099D3

#4099D3 is a light, vivid cyan. Relative luminance 0.286; OKLCH L 65.5% C 0.121 H 240.8°. Best body text is #000000 at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#4099D3
RGB	rgb(64, 153, 211)
HSL	hsl(204, 63%, 54%)
HSV	hsv(204, 70%, 83%)
CMYK	cmyk(69.7%, 27.5%, 0%, 17.3%)
CIE-LAB	lab(60.40, -7.86, -37.36)
CIE-LCH	lch(60.40, 38.18, 258.12°)
OKLab	oklab(65.47% -0.0589 -0.1054)
OKLCH	oklch(65.47% 0.121 240.8)
XYZ	xyz(25.2589, 28.5728, 65.7993)
Luminance	0.2858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4099D3 #D37A40

analogous

#40D3C3 #4099D3 #4050D3

triadic

#4099D3 #D34099 #99D340

tetradic

#4099D3 #C340D3 #D37A40 #50D340

square

#4099D3 #C340D3 #D37A40 #50D340

split-complementary

#4099D3 #D34050 #D3C340

monochromatic

#1D567C #2879AE #4099D3 #72B4DE #A3CEEA

Accessibility & contrast

On white

3.13

#4099D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.72

#4099D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4099D3

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4099D3	#FFFFFF	#000000	##000000
##4099D3	1.00	3.13	6.72	6.72
#FFFFFF	3.13	1.00	21.00	21.00
#000000	6.72	21.00	1.00	1.00
##000000	6.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E9AD6

Deuteranopia (green-blind)

#6A8BD2

Tritanopia (blue-blind)

#00A7AD

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #4099d3;
/* rgb */ color: rgb(64, 153, 211);
/* oklch */ color: oklch(65.5% 0.121 240.8);

Tailwind

colors: {
  custom: {
    50: '#86b6e0',
    500: '#4099d3',
    950: '#000000',
  },
}

SCSS

$custom: #4099d3;
$custom-light: #86b6e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4099d3",
  "rgb": {
    "r": 64,
    "g": 153,
    "b": 211
  },
  "hsl": {
    "h": 203.673,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.65474,
    "c": 0.12073,
    "h": 240.8
  },
  "luminance": 0.28576
}

Semantic roles & 50–950 ramp

primary

#4099D3

secondary

#D7B198

accent

#8342E6

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #4099D3

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

Preview Lab → · Contrast checker → · Palette generator →