#51D0F6#51D0F6

#51D0F6 is a light, vivid cyan. Relative luminance 0.535; OKLCH L 80.2% C 0.122 H 221.4°. Best body text is #000000 at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#51D0F6
RGB	rgb(81, 208, 246)
HSL	hsl(194, 90%, 64%)
HSV	hsv(194, 67%, 96%)
CMYK	cmyk(67.1%, 15.4%, 0%, 3.5%)
CIE-LAB	lab(78.18, -23.35, -28.91)
CIE-LCH	lch(78.18, 37.16, 231.07°)
OKLab	oklab(80.24% -0.0916 -0.0807)
OKLCH	oklch(80.24% 0.122 221.4)
XYZ	xyz(42.5770, 53.5102, 95.2555)
Luminance	0.5352 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D0F6 #F67751

analogous

#51F6CA #51D0F6 #517EF6

triadic

#51D0F6 #F651D0 #D0F651

tetradic

#51D0F6 #CA51F6 #F67751 #7EF651

square

#51D0F6 #CA51F6 #F67751 #7EF651

split-complementary

#51D0F6 #F6517E #F6CA51

monochromatic

#0A98C3 #17C0F3 #51D0F6 #8BE0F9 #C5EFFC

Accessibility & contrast

On white

1.79

#51D0F6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.70

#51D0F6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D0F6

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D0F6	#FFFFFF	#000000	##000000
##51D0F6	1.00	1.79	11.70	11.70
#FFFFFF	1.79	1.00	21.00	21.00
#000000	11.70	21.00	1.00	1.00
##000000	11.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9CBF8

Deuteranopia (green-blind)

#A2BAF6

Tritanopia (blue-blind)

#00DCDC

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #51d0f6;
/* rgb */ color: rgb(81, 208, 246);
/* oklch */ color: oklch(80.2% 0.122 221.4);

Tailwind

colors: {
  custom: {
    50: '#94def9',
    500: '#51d0f6',
    950: '#000000',
  },
}

SCSS

$custom: #51d0f6;
$custom-light: #94def9;
$custom-dark: #000000;

JSON

{
  "hex": "#51d0f6",
  "rgb": {
    "r": 81,
    "g": 208,
    "b": 246
  },
  "hsl": {
    "h": 193.818,
    "s": 90.164,
    "l": 64.118
  },
  "oklch": {
    "l": 0.80239,
    "c": 0.12208,
    "h": 221.4
  },
  "luminance": 0.53515
}

Semantic roles & 50–950 ramp

primary

#51D0F6

secondary

#C04E2B

accent

#3500E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #51D0F6

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

Preview Lab → · Contrast checker → · Palette generator →