#51BFE3#51BFE3

#51BFE3 is a light, moderate cyan. Relative luminance 0.446; OKLCH L 75.5% C 0.112 H 222.9°. Best body text is #000000 at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#51BFE3
RGB	rgb(81, 191, 227)
HSL	hsl(195, 72%, 60%)
HSV	hsv(195, 64%, 89%)
CMYK	cmyk(64.3%, 15.9%, 0%, 11%)
CIE-LAB	lab(72.60, -20.51, -27.24)
CIE-LCH	lch(72.60, 34.10, 233.02°)
OKLab	oklab(75.54% -0.0817 -0.076)
OKLCH	oklch(75.54% 0.112 222.9)
XYZ	xyz(35.8837, 44.5532, 79.3667)
Luminance	0.4456 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BFE3 #E37551

analogous

#51E3BE #51BFE3 #5176E3

triadic

#51BFE3 #E351BF #BFE351

tetradic

#51BFE3 #BE51E3 #E37551 #76E351

square

#51BFE3 #BE51E3 #E37551 #76E351

split-complementary

#51BFE3 #E35176 #E3BE51

monochromatic

#1A7FA0 #22A9D5 #51BFE3 #86D2EB #BAE6F4

Accessibility & contrast

On white

2.12

#51BFE3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.91

#51BFE3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BFE3

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BFE3	#FFFFFF	#000000	##000000
##51BFE3	1.00	2.12	9.91	9.91
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.91	21.00	1.00	1.00
##000000	9.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AABBE5

Deuteranopia (green-blind)

#96ABE3

Tritanopia (blue-blind)

#00CACB

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51bfe3;
/* rgb */ color: rgb(81, 191, 227);
/* oklch */ color: oklch(75.5% 0.112 222.9);

Tailwind

colors: {
  custom: {
    50: '#91d2ec',
    500: '#51bfe3',
    950: '#000000',
  },
}

SCSS

$custom: #51bfe3;
$custom-light: #91d2ec;
$custom-dark: #000000;

JSON

{
  "hex": "#51bfe3",
  "rgb": {
    "r": 81,
    "g": 191,
    "b": 227
  },
  "hsl": {
    "h": 194.795,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.75542,
    "c": 0.11157,
    "h": 222.9
  },
  "luminance": 0.44557
}

Semantic roles & 50–950 ramp

primary

#51BFE3

secondary

#E4BAAC

accent

#4111D4

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BFE3

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

Preview Lab → · Contrast checker → · Palette generator →