#518BB3#518BB3

#518BB3 is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 61.4% C 0.086 H 240.3°. Best body text is #000000 at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#518BB3
RGB	rgb(81, 139, 179)
HSL	hsl(204, 39%, 51%)
HSV	hsv(204, 55%, 70%)
CMYK	cmyk(54.7%, 22.3%, 0%, 29.8%)
CIE-LAB	lab(55.55, -7.29, -26.79)
CIE-LCH	lch(55.55, 27.76, 254.77°)
OKLab	oklab(61.35% -0.0427 -0.0748)
OKLCH	oklch(61.35% 0.086 240.3)
XYZ	xyz(20.7597, 23.4675, 46.0748)
Luminance	0.2347 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#518BB3 #B37951

analogous

#51B3AA #518BB3 #515AB3

triadic

#518BB3 #B3518B #8BB351

tetradic

#518BB3 #AA51B3 #B37951 #5AB351

square

#518BB3 #AA51B3 #B37951 #5AB351

split-complementary

#518BB3 #B3515A #B3AA51

monochromatic

#2A4A60 #3C6B8A #518BB3 #7CA7C6 #A6C4D8

Accessibility & contrast

On white

3.69

#518BB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.69

#518BB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #518BB3

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##518BB3	#FFFFFF	#000000	##000000
##518BB3	1.00	3.69	5.69	5.69
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.69	21.00	1.00	1.00
##000000	5.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798BB5

Deuteranopia (green-blind)

#6C81B2

Tritanopia (blue-blind)

#0A9598

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #518bb3;
/* rgb */ color: rgb(81, 139, 179);
/* oklch */ color: oklch(61.4% 0.086 240.3);

Tailwind

colors: {
  custom: {
    50: '#89acca',
    500: '#518bb3',
    950: '#000000',
  },
}

SCSS

$custom: #518bb3;
$custom-light: #89acca;
$custom-dark: #000000;

JSON

{
  "hex": "#518bb3",
  "rgb": {
    "r": 81,
    "g": 139,
    "b": 179
  },
  "hsl": {
    "h": 204.49,
    "s": 39.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.61353,
    "c": 0.08615,
    "h": 240.3
  },
  "luminance": 0.23469
}

Semantic roles & 50–950 ramp

primary

#518BB3

secondary

#C6AC9A

accent

#8959CF

background

#F8FAFC

surface

#F0F4F8

border

#CBCED1

text

#0C1013

muted

#7D7F82

Preview Lab

Preview with #518BB3

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

Preview Lab → · Contrast checker → · Palette generator →