#409BD9#409BD9

#409BD9 is a light, vivid cyan. Relative luminance 0.295; OKLCH L 66.2% C 0.126 H 242.1°. Best body text is #000000 at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#409BD9
RGB	rgb(64, 155, 217)
HSL	hsl(204, 67%, 55%)
HSV	hsv(204, 71%, 85%)
CMYK	cmyk(70.5%, 28.6%, 0%, 14.9%)
CIE-LAB	lab(61.25, -6.95, -39.37)
CIE-LCH	lch(61.25, 39.98, 259.99°)
OKLab	oklab(66.24% -0.0589 -0.1112)
OKLCH	oklch(66.24% 0.126 242.1)
XYZ	xyz(26.3553, 29.5395, 69.9449)
Luminance	0.2954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#409BD9 #D97E40

analogous

#40D9CB #409BD9 #404ED9

triadic

#409BD9 #D9409B #9BD940

tetradic

#409BD9 #CB40D9 #D97E40 #4ED940

square

#409BD9 #CB40D9 #D97E40 #4ED940

split-complementary

#409BD9 #D9404E #D9CB40

monochromatic

#1A5984 #247CB7 #409BD9 #73B6E3 #A6D0ED

Accessibility & contrast

On white

3.04

#409BD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.91

#409BD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #409BD9

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##409BD9	#FFFFFF	#000000	##000000
##409BD9	1.00	3.04	6.91	6.91
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.91	21.00	1.00	1.00
##000000	6.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F9CDC

Deuteranopia (green-blind)

#6A8DD8

Tritanopia (blue-blind)

#00AAB1

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #409bd9;
/* rgb */ color: rgb(64, 155, 217);
/* oklch */ color: oklch(66.2% 0.126 242.1);

Tailwind

colors: {
  custom: {
    50: '#87b8e5',
    500: '#409bd9',
    950: '#000000',
  },
}

SCSS

$custom: #409bd9;
$custom-light: #87b8e5;
$custom-dark: #000000;

JSON

{
  "hex": "#409bd9",
  "rgb": {
    "r": 64,
    "g": 155,
    "b": 217
  },
  "hsl": {
    "h": 204.314,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.66238,
    "c": 0.12588,
    "h": 242.1
  },
  "luminance": 0.29542
}

Semantic roles & 50–950 ramp

primary

#409BD9

secondary

#DAB49A

accent

#843EEA

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0D1115

muted

#7D8084

Preview Lab

Preview with #409BD9

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

Preview Lab → · Contrast checker → · Palette generator →