#51D7F2#51D7F2

#51D7F2 is a light, vivid cyan. Relative luminance 0.568; OKLCH L 81.7% C 0.120 H 213.6°. Best body text is #000000 at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#51D7F2
RGB	rgb(81, 215, 242)
HSL	hsl(190, 86%, 63%)
HSV	hsv(190, 67%, 95%)
CMYK	cmyk(66.5%, 11.2%, 0%, 5.1%)
CIE-LAB	lab(80.04, -28.03, -23.92)
CIE-LCH	lch(80.04, 36.85, 220.49°)
OKLab	oklab(81.69% -0.1 -0.0665)
OKLCH	oklch(81.69% 0.12 213.6)
XYZ	xyz(43.7141, 56.7561, 92.6384)
Luminance	0.5676 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D7F2 #F26C51

analogous

#51F2BC #51D7F2 #5186F2

triadic

#51D7F2 #F251D7 #D7F251

tetradic

#51D7F2 #BC51F2 #F26C51 #86F251

square

#51D7F2 #BC51F2 #F26C51 #86F251

split-complementary

#51D7F2 #F25186 #F2BC51

monochromatic

#0E9EBB #18CAEE #51D7F2 #8AE4F6 #C3F1FB

Accessibility & contrast

On white

1.70

#51D7F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.35

#51D7F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D7F2

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D7F2	#FFFFFF	#000000	##000000
##51D7F2	1.00	1.70	12.35	12.35
#FFFFFF	1.70	1.00	21.00	21.00
#000000	12.35	21.00	1.00	1.00
##000000	12.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3D0F4

Deuteranopia (green-blind)

#ACBFF2

Tritanopia (blue-blind)

#00E2DF

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #51d7f2;
/* rgb */ color: rgb(81, 215, 242);
/* oklch */ color: oklch(81.7% 0.120 213.6);

Tailwind

colors: {
  custom: {
    50: '#94e3f6',
    500: '#51d7f2',
    950: '#000000',
  },
}

SCSS

$custom: #51d7f2;
$custom-light: #94e3f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51d7f2",
  "rgb": {
    "r": 81,
    "g": 215,
    "b": 242
  },
  "hsl": {
    "h": 190.062,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.81692,
    "c": 0.12013,
    "h": 213.6
  },
  "luminance": 0.56761
}

Semantic roles & 50–950 ramp

primary

#51D7F2

secondary

#B9452E

accent

#2803E3

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51D7F2

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

Preview Lab → · Contrast checker → · Palette generator →