#51BFE2#51BFE2

#51BFE2 is a light, moderate cyan. Relative luminance 0.445; OKLCH L 75.5% C 0.111 H 222.3°. Best body text is #000000 at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#51BFE2
RGB	rgb(81, 191, 226)
HSL	hsl(194, 71%, 60%)
HSV	hsv(194, 64%, 89%)
CMYK	cmyk(64.2%, 15.5%, 0%, 11.4%)
CIE-LAB	lab(72.56, -20.81, -26.75)
CIE-LCH	lch(72.56, 33.90, 232.12°)
OKLab	oklab(75.5% -0.0821 -0.0746)
OKLCH	oklch(75.5% 0.111 222.3)
XYZ	xyz(35.7461, 44.4981, 78.6419)
Luminance	0.4450 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BFE2 #E27451

analogous

#51E2BD #51BFE2 #5176E2

triadic

#51BFE2 #E251BF #BFE251

tetradic

#51BFE2 #BD51E2 #E27451 #76E251

square

#51BFE2 #BD51E2 #E27451 #76E251

split-complementary

#51BFE2 #E25176 #E2BD51

monochromatic

#1A7E9E #23A8D3 #51BFE2 #85D2EB #BAE6F3

Accessibility & contrast

On white

2.12

#51BFE2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.90

#51BFE2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BFE2

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BFE2	#FFFFFF	#000000	##000000
##51BFE2	1.00	2.12	9.90	9.90
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.90	21.00	1.00	1.00
##000000	9.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ABBBE4

Deuteranopia (green-blind)

#96ABE2

Tritanopia (blue-blind)

#00CACA

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51bfe2;
/* rgb */ color: rgb(81, 191, 226);
/* oklch */ color: oklch(75.5% 0.111 222.3);

Tailwind

colors: {
  custom: {
    50: '#91d2eb',
    500: '#51bfe2',
    950: '#000000',
  },
}

SCSS

$custom: #51bfe2;
$custom-light: #91d2eb;
$custom-dark: #000000;

JSON

{
  "hex": "#51bfe2",
  "rgb": {
    "r": 81,
    "g": 191,
    "b": 226
  },
  "hsl": {
    "h": 194.483,
    "s": 71.429,
    "l": 60.196
  },
  "oklch": {
    "l": 0.75501,
    "c": 0.1109,
    "h": 222.3
  },
  "luminance": 0.44502
}

Semantic roles & 50–950 ramp

primary

#51BFE2

secondary

#E3B9AC

accent

#4112D3

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BFE2

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

Preview Lab → · Contrast checker → · Palette generator →