#4090D9#4090D9

#4090D9 is a light, vivid cyan. Relative luminance 0.260; OKLCH L 63.7% C 0.135 H 249.0°. Best body text is #000000 at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#4090D9
RGB	rgb(64, 144, 217)
HSL	hsl(209, 67%, 55%)
HSV	hsv(209, 71%, 85%)
CMYK	cmyk(70.5%, 33.6%, 0%, 14.9%)
CIE-LAB	lab(58.08, -0.63, -44.37)
CIE-LCH	lch(58.08, 44.37, 269.19°)
OKLab	oklab(63.73% -0.0484 -0.1259)
OKLCH	oklch(63.73% 0.135 249)
XYZ	xyz(24.6073, 26.0436, 69.3622)
Luminance	0.2605 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4090D9 #D98940

analogous

#40D9D5 #4090D9 #4044D9

triadic

#4090D9 #D94090 #90D940

tetradic

#4090D9 #D540D9 #D98940 #44D940

square

#4090D9 #D540D9 #D98940 #44D940

split-complementary

#4090D9 #D94044 #D9D540

monochromatic

#1A5284 #2471B7 #4090D9 #73AEE3 #A6CBED

Accessibility & contrast

On white

3.38

#4090D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.21

#4090D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4090D9

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4090D9	#FFFFFF	#000000	##000000
##4090D9	1.00	3.38	6.21	6.21
#FFFFFF	3.38	1.00	21.00	21.00
#000000	6.21	21.00	1.00	1.00
##000000	6.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F94DC

Deuteranopia (green-blind)

#5985D8

Tritanopia (blue-blind)

#00A1AA

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #4090d9;
/* rgb */ color: rgb(64, 144, 217);
/* oklch */ color: oklch(63.7% 0.135 249.0);

Tailwind

colors: {
  custom: {
    50: '#86b0e5',
    500: '#4090d9',
    950: '#000000',
  },
}

SCSS

$custom: #4090d9;
$custom-light: #86b0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4090d9",
  "rgb": {
    "r": 64,
    "g": 144,
    "b": 217
  },
  "hsl": {
    "h": 208.627,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.63733,
    "c": 0.13487,
    "h": 249
  },
  "luminance": 0.26046
}

Semantic roles & 50–950 ramp

primary

#4090D9

secondary

#DAB99A

accent

#903EEA

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1016

muted

#7D7F84

Preview Lab

Preview with #4090D9

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

Preview Lab → · Contrast checker → · Palette generator →