#51ACFF#51ACFF

#51ACFF is a light, vivid cyan. Relative luminance 0.385; OKLCH L 72.6% C 0.149 H 248.8°. Best body text is #000000 at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#51ACFF
RGB	rgb(81, 172, 255)
HSL	hsl(209, 100%, 66%)
HSV	hsv(209, 68%, 100%)
CMYK	cmyk(68.2%, 32.5%, 0%, 0%)
CIE-LAB	lab(68.37, -1.25, -49.02)
CIE-LCH	lch(68.37, 49.03, 268.54°)
OKLab	oklab(72.57% -0.0539 -0.1389)
OKLCH	oklch(72.57% 0.149 248.8)
XYZ	xyz(36.1891, 38.4705, 100.1067)
Luminance	0.3847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ACFF #FFA451

analogous

#51FFFB #51ACFF #5155FF

triadic

#51ACFF #FF51AC #ACFF51

tetradic

#51ACFF #FB51FF #FFA451 #55FF51

square

#51ACFF #FB51FF #FFA451 #55FF51

split-complementary

#51ACFF #FF5155 #FFFB51

monochromatic

#0070D6 #148FFF #51ACFF #8EC9FF #CBE6FF

Accessibility & contrast

On white

2.42

#51ACFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.69

#51ACFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ACFF

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ACFF	#FFFFFF	#000000	##000000
##51ACFF	1.00	2.42	8.69	8.69
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.69	21.00	1.00	1.00
##000000	8.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#87B0FF

Deuteranopia (green-blind)

#6E9FFD

Tritanopia (blue-blind)

#00C0CA

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #51acff;
/* rgb */ color: rgb(81, 172, 255);
/* oklch */ color: oklch(72.6% 0.149 248.8);

Tailwind

colors: {
  custom: {
    50: '#94c4ff',
    500: '#51acff',
    950: '#000000',
  },
}

SCSS

$custom: #51acff;
$custom-light: #94c4ff;
$custom-dark: #000000;

JSON

{
  "hex": "#51acff",
  "rgb": {
    "r": 81,
    "g": 172,
    "b": 255
  },
  "hsl": {
    "h": 208.621,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.72569,
    "c": 0.14905,
    "h": 248.8
  },
  "luminance": 0.38474
}

Semantic roles & 50–950 ramp

primary

#51ACFF

secondary

#F3D5B9

accent

#6D00E6

background

#F9FCFF

surface

#F2F8FF

border

#CCD1D7

text

#0F1218

muted

#7E8186

Preview Lab

Preview with #51ACFF

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

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