#4099DF#4099DF

#4099DF is a light, vivid cyan. Relative luminance 0.292; OKLCH L 66.1% C 0.134 H 245.7°. Best body text is #000000 at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#4099DF
RGB	rgb(64, 153, 223)
HSL	hsl(206, 71%, 56%)
HSV	hsv(206, 71%, 87%)
CMYK	cmyk(71.3%, 31.4%, 0%, 12.5%)
CIE-LAB	lab(60.96, -3.75, -43.18)
CIE-LCH	lch(60.96, 43.34, 265.03°)
OKLab	oklab(66.09% -0.0552 -0.1223)
OKLCH	oklch(66.09% 0.134 245.7)
XYZ	xyz(26.8198, 29.1972, 74.0199)
Luminance	0.2920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4099DF #DF8640

analogous

#40DFD5 #4099DF #404ADF

triadic

#4099DF #DF4099 #99DF40

tetradic

#4099DF #D540DF #DF8640 #4ADF40

square

#4099DF #D540DF #DF8640 #4ADF40

split-complementary

#4099DF #DF404A #DFD540

monochromatic

#18598D #207BC1 #4099DF #74B5E8 #A9D1F1

Accessibility & contrast

On white

3.07

#4099DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.84

#4099DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4099DF

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4099DF	#FFFFFF	#000000	##000000
##4099DF	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)

#799BE2

Deuteranopia (green-blind)

#638CDE

Tritanopia (blue-blind)

#00AAB2

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #4099df;
/* rgb */ color: rgb(64, 153, 223);
/* oklch */ color: oklch(66.1% 0.134 245.7);

Tailwind

colors: {
  custom: {
    50: '#88b6e9',
    500: '#4099df',
    950: '#000000',
  },
}

SCSS

$custom: #4099df;
$custom-light: #88b6e9;
$custom-dark: #000000;

JSON

{
  "hex": "#4099df",
  "rgb": {
    "r": 64,
    "g": 153,
    "b": 223
  },
  "hsl": {
    "h": 206.415,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.66092,
    "c": 0.1342,
    "h": 245.7
  },
  "luminance": 0.292
}

Semantic roles & 50–950 ramp

primary

#4099DF

secondary

#DEB99D

accent

#893AEE

background

#F9FBFE

surface

#F1F6FD

border

#CBD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #4099DF

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

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