#51D9F4#51D9F4

#51D9F4 is a very light, vivid teal. Relative luminance 0.579; OKLCH L 82.2% C 0.121 H 213.4°. Best body text is #000000 at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#51D9F4
RGB	rgb(81, 217, 244)
HSL	hsl(190, 88%, 64%)
HSV	hsv(190, 67%, 96%)
CMYK	cmyk(66.8%, 11.1%, 0%, 4.3%)
CIE-LAB	lab(80.68, -28.41, -24.01)
CIE-LCH	lch(80.68, 37.20, 220.20°)
OKLab	oklab(82.23% -0.1012 -0.0668)
OKLCH	oklch(82.23% 0.121 213.4)
XYZ	xyz(44.5285, 57.9017, 94.3998)
Luminance	0.5791 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D9F4 #F46C51

analogous

#51F4BE #51D9F4 #5187F4

triadic

#51D9F4 #F451D9 #D9F451

tetradic

#51D9F4 #BE51F4 #F46C51 #87F451

square

#51D9F4 #BE51F4 #F46C51 #87F451

split-complementary

#51D9F4 #F45187 #F4BE51

monochromatic

#0CA1BF #17CCF0 #51D9F4 #8BE6F8 #C4F2FB

Accessibility & contrast

On white

1.67

#51D9F4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.58

#51D9F4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D9F4

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D9F4	#FFFFFF	#000000	##000000
##51D9F4	1.00	1.67	12.58	12.58
#FFFFFF	1.67	1.00	21.00	21.00
#000000	12.58	21.00	1.00	1.00
##000000	12.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C5D2F6

Deuteranopia (green-blind)

#AEC1F4

Tritanopia (blue-blind)

#00E4E1

Achromatopsia (no color)

#C8C8C8

Design tokens & code

CSS

--color: #51d9f4;
/* rgb */ color: rgb(81, 217, 244);
/* oklch */ color: oklch(82.2% 0.121 213.4);

Tailwind

colors: {
  custom: {
    50: '#94e5f7',
    500: '#51d9f4',
    950: '#000000',
  },
}

SCSS

$custom: #51d9f4;
$custom-light: #94e5f7;
$custom-dark: #000000;

JSON

{
  "hex": "#51d9f4",
  "rgb": {
    "r": 81,
    "g": 217,
    "b": 244
  },
  "hsl": {
    "h": 189.939,
    "s": 88.108,
    "l": 63.725
  },
  "oklch": {
    "l": 0.82231,
    "c": 0.12125,
    "h": 213.4
  },
  "luminance": 0.57907
}

Semantic roles & 50–950 ramp

primary

#51D9F4

secondary

#BD452D

accent

#2701E5

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51D9F4

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

Preview Lab → · Contrast checker → · Palette generator →