#51BBDC#51BBDC

#51BBDC is a light, moderate cyan. Relative luminance 0.425; OKLCH L 74.3% C 0.107 H 221.6°. Best body text is #000000 at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#51BBDC
RGB	rgb(81, 187, 220)
HSL	hsl(194, 67%, 59%)
HSV	hsv(194, 63%, 86%)
CMYK	cmyk(63.2%, 15%, 0%, 13.7%)
CIE-LAB	lab(71.18, -20.58, -25.60)
CIE-LCH	lch(71.18, 32.85, 231.20°)
OKLab	oklab(74.33% -0.0802 -0.0713)
OKLCH	oklch(74.33% 0.107 221.6)
XYZ	xyz(34.0767, 42.4537, 74.0948)
Luminance	0.4246 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BBDC #DC7251

analogous

#51DCB8 #51BBDC #5176DC

triadic

#51BBDC #DC51BB #BBDC51

tetradic

#51BBDC #B851DC #DC7251 #76DC51

square

#51BBDC #B851DC #DC7251 #76DC51

split-complementary

#51BBDC #DC5176 #DCB851

monochromatic

#1E7895 #28A2C8 #51BBDC #84CFE6 #B7E3F0

Accessibility & contrast

On white

2.21

#51BBDC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.49

#51BBDC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BBDC

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BBDC	#FFFFFF	#000000	##000000
##51BBDC	1.00	2.21	9.49	9.49
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.49	21.00	1.00	1.00
##000000	9.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7B7DE

Deuteranopia (green-blind)

#94A8DC

Tritanopia (blue-blind)

#00C6C5

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #51bbdc;
/* rgb */ color: rgb(81, 187, 220);
/* oklch */ color: oklch(74.3% 0.107 221.6);

Tailwind

colors: {
  custom: {
    50: '#90cfe7',
    500: '#51bbdc',
    950: '#000000',
  },
}

SCSS

$custom: #51bbdc;
$custom-light: #90cfe7;
$custom-dark: #000000;

JSON

{
  "hex": "#51bbdc",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 220
  },
  "hsl": {
    "h": 194.245,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.74326,
    "c": 0.10734,
    "h": 221.6
  },
  "luminance": 0.42457
}

Semantic roles & 50–950 ramp

primary

#51BBDC

secondary

#E0B6A9

accent

#673EE9

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BBDC

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

Preview Lab → · Contrast checker → · Palette generator →