#409BDF#409BDF

#409BDF is a light, vivid cyan. Relative luminance 0.299; OKLCH L 66.5% C 0.133 H 244.5°. Best body text is #000000 at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#409BDF
RGB	rgb(64, 155, 223)
HSL	hsl(206, 71%, 56%)
HSV	hsv(206, 71%, 87%)
CMYK	cmyk(71.3%, 30.5%, 0%, 12.5%)
CIE-LAB	lab(61.53, -4.89, -42.27)
CIE-LCH	lch(61.53, 42.55, 263.40°)
OKLab	oklab(66.55% -0.0571 -0.1197)
OKLCH	oklch(66.55% 0.133 244.5)
XYZ	xyz(27.1499, 29.8574, 74.1299)
Luminance	0.2986 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#409BDF #DF8440

analogous

#40DFD3 #409BDF #404CDF

triadic

#409BDF #DF409B #9BDF40

tetradic

#409BDF #D340DF #DF8440 #4CDF40

square

#409BDF #D340DF #DF8440 #4CDF40

split-complementary

#409BDF #DF404C #DFD340

monochromatic

#185B8D #207DC1 #409BDF #74B6E8 #A9D2F1

Accessibility & contrast

On white

3.01

#409BDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.97

#409BDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #409BDF

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##409BDF	#FFFFFF	#000000	##000000
##409BDF	1.00	3.01	6.97	6.97
#FFFFFF	3.01	1.00	21.00	21.00
#000000	6.97	21.00	1.00	1.00
##000000	6.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C9DE2

Deuteranopia (green-blind)

#668EDE

Tritanopia (blue-blind)

#00ACB3

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #409bdf;
/* rgb */ color: rgb(64, 155, 223);
/* oklch */ color: oklch(66.5% 0.133 244.5);

Tailwind

colors: {
  custom: {
    50: '#88b8e9',
    500: '#409bdf',
    950: '#000000',
  },
}

SCSS

$custom: #409bdf;
$custom-light: #88b8e9;
$custom-dark: #000000;

JSON

{
  "hex": "#409bdf",
  "rgb": {
    "r": 64,
    "g": 155,
    "b": 223
  },
  "hsl": {
    "h": 205.66,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.66546,
    "c": 0.13259,
    "h": 244.5
  },
  "luminance": 0.2986
}

Semantic roles & 50–950 ramp

primary

#409BDF

secondary

#DEB99D

accent

#873AEE

background

#F9FBFE

surface

#F1F6FD

border

#CBD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #409BDF

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

Preview Lab → · Contrast checker → · Palette generator →