#51BDDC#51BDDC

#51BDDC is a light, moderate cyan. Relative luminance 0.433; OKLCH L 74.8% C 0.107 H 219.9°. Best body text is #000000 at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#51BDDC
RGB	rgb(81, 189, 220)
HSL	hsl(193, 67%, 59%)
HSV	hsv(193, 63%, 86%)
CMYK	cmyk(63.2%, 14.1%, 0%, 13.7%)
CIE-LAB	lab(71.76, -21.61, -24.71)
CIE-LCH	lch(71.76, 32.83, 228.83°)
OKLab	oklab(74.79% -0.0823 -0.0688)
OKLCH	oklch(74.79% 0.107 219.9)
XYZ	xyz(34.5040, 43.3082, 74.2372)
Luminance	0.4331 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BDDC #DC7051

analogous

#51DCB5 #51BDDC #5178DC

triadic

#51BDDC #DC51BD #BDDC51

tetradic

#51BDDC #B551DC #DC7051 #78DC51

square

#51BDDC #B551DC #DC7051 #78DC51

split-complementary

#51BDDC #DC5178 #DCB551

monochromatic

#1E7A95 #28A4C8 #51BDDC #84D0E6 #B7E4F0

Accessibility & contrast

On white

2.17

#51BDDC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.66

#51BDDC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BDDC

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BDDC	#FFFFFF	#000000	##000000
##51BDDC	1.00	2.17	9.66	9.66
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.66	21.00	1.00	1.00
##000000	9.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AAB8DE

Deuteranopia (green-blind)

#96A9DC

Tritanopia (blue-blind)

#00C7C7

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #51bddc;
/* rgb */ color: rgb(81, 189, 220);
/* oklch */ color: oklch(74.8% 0.107 219.9);

Tailwind

colors: {
  custom: {
    50: '#90d1e7',
    500: '#51bddc',
    950: '#000000',
  },
}

SCSS

$custom: #51bddc;
$custom-light: #90d1e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51bddc",
  "rgb": {
    "r": 81,
    "g": 189,
    "b": 220
  },
  "hsl": {
    "h": 193.381,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.74791,
    "c": 0.10725,
    "h": 219.9
  },
  "luminance": 0.43312
}

Semantic roles & 50–950 ramp

primary

#51BDDC

secondary

#E0B5A9

accent

#653EE9

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BDDC

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

Preview Lab → · Contrast checker → · Palette generator →