#51D3E4#51D3E4

#51D3E4 is a light, moderate teal. Relative luminance 0.539; OKLCH L 80.2% C 0.114 H 207.3°. Best body text is #000000 at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#51D3E4
RGB	rgb(81, 211, 228)
HSL	hsl(187, 73%, 61%)
HSV	hsv(187, 64%, 89%)
CMYK	cmyk(64.5%, 7.5%, 0%, 10.6%)
CIE-LAB	lab(78.42, -30.18, -18.90)
CIE-LCH	lch(78.42, 35.61, 212.06°)
OKLab	oklab(80.24% -0.1015 -0.0524)
OKLCH	oklch(80.24% 0.114 207.3)
XYZ	xyz(40.6853, 53.9348, 81.6500)
Luminance	0.5394 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D3E4 #E46251

analogous

#51E4AB #51D3E4 #5189E4

triadic

#51D3E4 #E451D3 #D3E451

tetradic

#51D3E4 #AB51E4 #E46251 #89E451

square

#51D3E4 #AB51E4 #E46251 #89E451

split-complementary

#51D3E4 #E45189 #E4AB51

monochromatic

#1992A2 #21C2D7 #51D3E4 #86E0EC #BBEEF4

Accessibility & contrast

On white

1.78

#51D3E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.79

#51D3E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D3E4

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D3E4	#FFFFFF	#000000	##000000
##51D3E4	1.00	1.78	11.79	11.79
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.79	21.00	1.00	1.00
##000000	11.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2CBE5

Deuteranopia (green-blind)

#ACBBE4

Tritanopia (blue-blind)

#00DCD8

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #51d3e4;
/* rgb */ color: rgb(81, 211, 228);
/* oklch */ color: oklch(80.2% 0.114 207.3);

Tailwind

colors: {
  custom: {
    50: '#92e1ec',
    500: '#51d3e4',
    950: '#000000',
  },
}

SCSS

$custom: #51d3e4;
$custom-light: #92e1ec;
$custom-dark: #000000;

JSON

{
  "hex": "#51d3e4",
  "rgb": {
    "r": 81,
    "g": 211,
    "b": 228
  },
  "hsl": {
    "h": 186.939,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.80235,
    "c": 0.11428,
    "h": 207.3
  },
  "luminance": 0.53939
}

Semantic roles & 50–950 ramp

primary

#51D3E4

secondary

#A44235

accent

#2710D5

background

#FCFEFE

surface

#F5FCFD

border

#CFD5D5

text

#0E1516

muted

#7F8484

Preview Lab

Preview with #51D3E4

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

Preview Lab → · Contrast checker → · Palette generator →