#51B6F2#51B6F2

#51B6F2 is a light, vivid cyan. Relative luminance 0.416; OKLCH L 74.1% C 0.128 H 238.1°. Best body text is #000000 at 9.32:1 contrast (WCAG AA passes).

Color values

HEX#51B6F2
RGBrgb(81, 182, 242)
HSLhsl(202, 86%, 63%)
HSVhsv(202, 67%, 95%)
CMYKcmyk(66.5%, 24.8%, 0%, 5.1%)
CIE-LABlab(70.60, -11.05, -38.46)
CIE-LCHlch(70.60, 40.02, 253.97°)
OKLaboklab(74.15% -0.0674 -0.1082)
OKLCHoklch(74.15% 0.128 238.1)
XYZxyz(36.1421, 41.6122, 90.1144)
Luminance0.4162 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51B6F2 #F28D51
analogous
#51F2DD #51B6F2 #5165F2
triadic
#51B6F2 #F251B6 #B6F251
tetradic
#51B6F2 #DD51F2 #F28D51 #65F251
square
#51B6F2 #DD51F2 #F28D51 #65F251
split-complementary
#51B6F2 #F25165 #F2DD51
monochromatic
#0E7ABB #189EEE #51B6F2 #8ACEF6 #C3E6FB

Accessibility & contrast

On white

2.25
#51B6F2 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.32
#51B6F2 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B6F2
9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51B6F2#FFFFFF#000000##000000
##51B6F21.002.259.329.32
#FFFFFF2.251.0021.0021.00
#0000009.3221.001.001.00
##0000009.3221.001.001.00

Color blindness preview

Protanopia (red-blind)
#9AB6F5
Deuteranopia (green-blind)
#84A6F1
Tritanopia (blue-blind)
#00C5CA
Achromatopsia (no color)
#ADADAD

Design tokens & code

CSS
--color: #51b6f2;
/* rgb */ color: rgb(81, 182, 242);
/* oklch */ color: oklch(74.1% 0.128 238.1);
Tailwind
colors: {
  custom: {
    50: '#92cbf6',
    500: '#51b6f2',
    950: '#000000',
  },
}
SCSS
$custom: #51b6f2;
$custom-light: #92cbf6;
$custom-dark: #000000;
JSON
{
  "hex": "#51b6f2",
  "rgb": {
    "r": 81,
    "g": 182,
    "b": 242
  },
  "hsl": {
    "h": 202.36,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.74147,
    "c": 0.1275,
    "h": 238.1
  },
  "luminance": 0.41616
}

Semantic roles & 50–950 ramp

primary
#51B6F2
secondary
#ECC8B3
accent
#5603E3
background
#F9FCFF
surface
#F2F8FE
border
#CCD1D6
text
#0E1317
muted
#7E8285

Preview Lab

Preview with #51B6F2

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

Preview Lab → · Contrast checker → · Palette generator →

#51B6F2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva