#51BCE3#51BCE3

#51BCE3 is a light, moderate cyan. Relative luminance 0.433; OKLCH L 74.8% C 0.112 H 225.4°. Best body text is #000000 at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#51BCE3
RGB	rgb(81, 188, 227)
HSL	hsl(196, 72%, 60%)
HSV	hsv(196, 64%, 89%)
CMYK	cmyk(64.3%, 17.2%, 0%, 11%)
CIE-LAB	lab(71.73, -18.96, -28.57)
CIE-LCH	lch(71.73, 34.29, 236.43°)
OKLab	oklab(74.85% -0.0786 -0.0798)
OKLCH	oklch(74.85% 0.112 225.4)
XYZ	xyz(35.2361, 43.2581, 79.1508)
Luminance	0.4326 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BCE3 #E37851

analogous

#51E3C1 #51BCE3 #5173E3

triadic

#51BCE3 #E351BC #BCE351

tetradic

#51BCE3 #C151E3 #E37851 #73E351

square

#51BCE3 #C151E3 #E37851 #73E351

split-complementary

#51BCE3 #E35173 #E3C151

monochromatic

#1A7CA0 #22A5D5 #51BCE3 #86D0EB #BAE5F4

Accessibility & contrast

On white

2.18

#51BCE3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.65

#51BCE3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BCE3

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BCE3	#FFFFFF	#000000	##000000
##51BCE3	1.00	2.18	9.65	9.65
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.65	21.00	1.00	1.00
##000000	9.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7B8E5

Deuteranopia (green-blind)

#92A9E3

Tritanopia (blue-blind)

#00C8C9

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #51bce3;
/* rgb */ color: rgb(81, 188, 227);
/* oklch */ color: oklch(74.8% 0.112 225.4);

Tailwind

colors: {
  custom: {
    50: '#91d0ec',
    500: '#51bce3',
    950: '#000000',
  },
}

SCSS

$custom: #51bce3;
$custom-light: #91d0ec;
$custom-dark: #000000;

JSON

{
  "hex": "#51bce3",
  "rgb": {
    "r": 81,
    "g": 188,
    "b": 227
  },
  "hsl": {
    "h": 196.027,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.74849,
    "c": 0.11202,
    "h": 225.4
  },
  "luminance": 0.43262
}

Semantic roles & 50–950 ramp

primary

#51BCE3

secondary

#E4BBAC

accent

#4511D4

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BCE3

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

Preview Lab → · Contrast checker → · Palette generator →