#509BCB#509BCB

#509BCB is a light, moderate cyan. Relative luminance 0.295; OKLCH L 66.1% C 0.103 H 239.1°. Best body text is #000000 at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#509BCB
RGB	rgb(80, 155, 203)
HSL	hsl(203, 54%, 55%)
HSV	hsv(203, 61%, 80%)
CMYK	cmyk(60.6%, 23.6%, 0%, 20.4%)
CIE-LAB	lab(61.18, -8.93, -31.63)
CIE-LCH	lch(61.18, 32.87, 254.24°)
OKLab	oklab(66.13% -0.0532 -0.0887)
OKLCH	oklch(66.13% 0.103 239.1)
XYZ	xyz(25.8050, 29.4575, 60.8143)
Luminance	0.2946 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#509BCB #CB8050

analogous

#50CBBE #509BCB #505DCB

triadic

#509BCB #CB509B #9BCB50

tetradic

#509BCB #BE50CB #CB8050 #5DCB50

square

#509BCB #BE50CB #CB8050 #5DCB50

split-complementary

#509BCB #CB505D #CBBE50

monochromatic

#255A7C #337CAB #509BCB #7FB6D9 #AED1E7

Accessibility & contrast

On white

3.05

#509BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.89

#509BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #509BCB

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##509BCB	#FFFFFF	#000000	##000000
##509BCB	1.00	3.05	6.89	6.89
#FFFFFF	3.05	1.00	21.00	21.00
#000000	6.89	21.00	1.00	1.00
##000000	6.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#859BCD

Deuteranopia (green-blind)

#748ECA

Tritanopia (blue-blind)

#00A7AB

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #509bcb;
/* rgb */ color: rgb(80, 155, 203);
/* oklch */ color: oklch(66.1% 0.103 239.1);

Tailwind

colors: {
  custom: {
    50: '#8cb8db',
    500: '#509bcb',
    950: '#000000',
  },
}

SCSS

$custom: #509bcb;
$custom-light: #8cb8db;
$custom-dark: #000000;

JSON

{
  "hex": "#509bcb",
  "rgb": {
    "r": 80,
    "g": 155,
    "b": 203
  },
  "hsl": {
    "h": 203.415,
    "s": 54.185,
    "l": 55.49
  },
  "oklch": {
    "l": 0.66131,
    "c": 0.10341,
    "h": 239.1
  },
  "luminance": 0.2946
}

Semantic roles & 50–950 ramp

primary

#509BCB

secondary

#D5B6A2

accent

#844ADE

background

#F9FBFD

surface

#F1F6FB

border

#CBD0D4

text

#0D1115

muted

#7E8083

Preview Lab

Preview with #509BCB

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

Preview Lab → · Contrast checker → · Palette generator →