#51BBDA#51BBDA

#51BBDA is a light, moderate cyan. Relative luminance 0.424; OKLCH L 74.2% C 0.106 H 220.3°. Best body text is #000000 at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#51BBDA
RGB	rgb(81, 187, 218)
HSL	hsl(194, 65%, 59%)
HSV	hsv(194, 63%, 85%)
CMYK	cmyk(62.8%, 14.2%, 0%, 14.5%)
CIE-LAB	lab(71.11, -21.19, -24.62)
CIE-LCH	lch(71.11, 32.48, 229.28°)
OKLab	oklab(74.24% -0.081 -0.0685)
OKLCH	oklch(74.24% 0.106 220.3)
XYZ	xyz(33.8134, 42.3484, 72.7081)
Luminance	0.4235 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BBDA #DA7051

analogous

#51DAB5 #51BBDA #5176DA

triadic

#51BBDA #DA51BB #BBDA51

tetradic

#51BBDA #B551DA #DA7051 #76DA51

square

#51BBDA #B551DA #DA7051 #76DA51

split-complementary

#51BBDA #DA5176 #DAB551

monochromatic

#1F7892 #2AA1C4 #51BBDA #83CFE5 #B6E2EF

Accessibility & contrast

On white

2.22

#51BBDA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.47

#51BBDA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BBDA

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BBDA	#FFFFFF	#000000	##000000
##51BBDA	1.00	2.22	9.47	9.47
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.47	21.00	1.00	1.00
##000000	9.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8B6DC

Deuteranopia (green-blind)

#94A8DA

Tritanopia (blue-blind)

#00C5C5

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #51bbda;
/* rgb */ color: rgb(81, 187, 218);
/* oklch */ color: oklch(74.2% 0.106 220.3);

Tailwind

colors: {
  custom: {
    50: '#8fcfe5',
    500: '#51bbda',
    950: '#000000',
  },
}

SCSS

$custom: #51bbda;
$custom-light: #8fcfe5;
$custom-dark: #000000;

JSON

{
  "hex": "#51bbda",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 218
  },
  "hsl": {
    "h": 193.577,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.74244,
    "c": 0.10609,
    "h": 220.3
  },
  "luminance": 0.42352
}

Semantic roles & 50–950 ramp

primary

#51BBDA

secondary

#DEB5A8

accent

#6640E8

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0E1415

muted

#7E8284

Preview Lab

Preview with #51BBDA

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

Preview Lab → · Contrast checker → · Palette generator →