#4099CF#4099CF

#4099CF is a light, moderate cyan. Relative luminance 0.284; OKLCH L 65.3% C 0.116 H 238.9°. Best body text is #000000 at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#4099CF
RGB	rgb(64, 153, 207)
HSL	hsl(203, 60%, 53%)
HSV	hsv(203, 69%, 81%)
CMYK	cmyk(69.1%, 26.1%, 0%, 18.8%)
CIE-LAB	lab(60.23, -9.21, -35.40)
CIE-LCH	lch(60.23, 36.58, 255.41°)
OKLab	oklab(65.28% -0.0601 -0.0997)
OKLCH	oklch(65.28% 0.116 238.9)
XYZ	xyz(24.7637, 28.3747, 63.1912)
Luminance	0.2838 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4099CF #CF7640

analogous

#40CFBD #4099CF #4051CF

triadic

#4099CF #CF4099 #99CF40

tetradic

#4099CF #BD40CF #CF7640 #51CF40

square

#4099CF #BD40CF #CF7640 #51CF40

split-complementary

#4099CF #CF4051 #CFBD40

monochromatic

#1E5577 #2A78A8 #4099CF #71B3DB #A2CDE8

Accessibility & contrast

On white

3.15

#4099CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.68

#4099CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4099CF

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4099CF	#FFFFFF	#000000	##000000
##4099CF	1.00	3.15	6.68	6.68
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.68	21.00	1.00	1.00
##000000	6.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8099D1

Deuteranopia (green-blind)

#6C8BCE

Tritanopia (blue-blind)

#00A7AC

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #4099cf;
/* rgb */ color: rgb(64, 153, 207);
/* oklch */ color: oklch(65.3% 0.116 238.9);

Tailwind

colors: {
  custom: {
    50: '#85b6de',
    500: '#4099cf',
    950: '#000000',
  },
}

SCSS

$custom: #4099cf;
$custom-light: #85b6de;
$custom-dark: #000000;

JSON

{
  "hex": "#4099cf",
  "rgb": {
    "r": 64,
    "g": 153,
    "b": 207
  },
  "hsl": {
    "h": 202.657,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.65276,
    "c": 0.11647,
    "h": 238.9
  },
  "luminance": 0.28377
}

Semantic roles & 50–950 ramp

primary

#4099CF

secondary

#D4AE97

accent

#8145E3

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #4099CF

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

Preview Lab → · Contrast checker → · Palette generator →