#51D3E5#51D3E5

#51D3E5 is a light, moderate teal. Relative luminance 0.540; OKLCH L 80.3% C 0.115 H 208.0°. Best body text is #000000 at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#51D3E5
RGB	rgb(81, 211, 229)
HSL	hsl(187, 74%, 61%)
HSV	hsv(187, 65%, 90%)
CMYK	cmyk(64.6%, 7.9%, 0%, 10.2%)
CIE-LAB	lab(78.46, -29.89, -19.39)
CIE-LCH	lch(78.46, 35.63, 212.97°)
OKLab	oklab(80.27% -0.1011 -0.0538)
OKLCH	oklch(80.27% 0.115 208)
XYZ	xyz(40.8245, 53.9905, 82.3832)
Luminance	0.5400 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D3E5 #E56351

analogous

#51E5AD #51D3E5 #5189E5

triadic

#51D3E5 #E551D3 #D3E551

tetradic

#51D3E5 #AD51E5 #E56351 #89E551

square

#51D3E5 #AD51E5 #E56351 #89E551

split-complementary

#51D3E5 #E55189 #E5AD51

monochromatic

#1892A3 #20C2D8 #51D3E5 #86E0ED #BBEEF5

Accessibility & contrast

On white

1.78

#51D3E5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.80

#51D3E5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D3E5

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D3E5	#FFFFFF	#000000	##000000
##51D3E5	1.00	1.78	11.80	11.80
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.80	21.00	1.00	1.00
##000000	11.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2CBE6

Deuteranopia (green-blind)

#ACBBE5

Tritanopia (blue-blind)

#00DCD8

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #51d3e5;
/* rgb */ color: rgb(81, 211, 229);
/* oklch */ color: oklch(80.3% 0.115 208.0);

Tailwind

colors: {
  custom: {
    50: '#92e1ed',
    500: '#51d3e5',
    950: '#000000',
  },
}

SCSS

$custom: #51d3e5;
$custom-light: #92e1ed;
$custom-dark: #000000;

JSON

{
  "hex": "#51d3e5",
  "rgb": {
    "r": 81,
    "g": 211,
    "b": 229
  },
  "hsl": {
    "h": 187.297,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.80272,
    "c": 0.11456,
    "h": 208
  },
  "luminance": 0.53995
}

Semantic roles & 50–950 ramp

primary

#51D3E5

secondary

#A64235

accent

#280FD6

background

#FCFEFE

surface

#F5FCFD

border

#CFD5D5

text

#0E1516

muted

#7F8484

Preview Lab

Preview with #51D3E5

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

Preview Lab → · Contrast checker → · Palette generator →