#51BCDC#51BCDC

#51BCDC is a light, moderate cyan. Relative luminance 0.429; OKLCH L 74.6% C 0.107 H 220.8°. Best body text is #000000 at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#51BCDC
RGB	rgb(81, 188, 220)
HSL	hsl(194, 67%, 59%)
HSV	hsv(194, 63%, 86%)
CMYK	cmyk(63.2%, 14.5%, 0%, 13.7%)
CIE-LAB	lab(71.47, -21.10, -25.16)
CIE-LCH	lch(71.47, 32.83, 230.01°)
OKLab	oklab(74.56% -0.0812 -0.0701)
OKLCH	oklch(74.56% 0.107 220.8)
XYZ	xyz(34.2896, 42.8795, 74.1657)
Luminance	0.4288 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BCDC #DC7151

analogous

#51DCB7 #51BCDC #5177DC

triadic

#51BCDC #DC51BC #BCDC51

tetradic

#51BCDC #B751DC #DC7151 #77DC51

square

#51BCDC #B751DC #DC7151 #77DC51

split-complementary

#51BCDC #DC5177 #DCB751

monochromatic

#1E7995 #28A3C8 #51BCDC #84D0E6 #B7E3F0

Accessibility & contrast

On white

2.19

#51BCDC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.58

#51BCDC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BCDC

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BCDC	#FFFFFF	#000000	##000000
##51BCDC	1.00	2.19	9.58	9.58
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.58	21.00	1.00	1.00
##000000	9.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B7DE

Deuteranopia (green-blind)

#95A9DC

Tritanopia (blue-blind)

#00C6C6

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #51bcdc;
/* rgb */ color: rgb(81, 188, 220);
/* oklch */ color: oklch(74.6% 0.107 220.8);

Tailwind

colors: {
  custom: {
    50: '#90d0e7',
    500: '#51bcdc',
    950: '#000000',
  },
}

SCSS

$custom: #51bcdc;
$custom-light: #90d0e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51bcdc",
  "rgb": {
    "r": 81,
    "g": 188,
    "b": 220
  },
  "hsl": {
    "h": 193.813,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.74558,
    "c": 0.10729,
    "h": 220.8
  },
  "luminance": 0.42883
}

Semantic roles & 50–950 ramp

primary

#51BCDC

secondary

#E0B6A9

accent

#663EE9

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BCDC

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

Preview Lab → · Contrast checker → · Palette generator →