#51A4E0#51A4E0

#51A4E0 is a light, moderate cyan. Relative luminance 0.337; OKLCH L 69.2% C 0.120 H 242.6°. Best body text is #000000 at 7.74:1 contrast (WCAG AA passes).

Color values

HEX#51A4E0
RGBrgb(81, 164, 224)
HSLhsl(205, 70%, 60%)
HSVhsv(205, 64%, 88%)
CMYKcmyk(63.8%, 26.8%, 0%, 12.2%)
CIE-LABlab(64.71, -7.00, -37.81)
CIE-LCHlch(64.71, 38.45, 259.52°)
OKLaboklab(69.22% -0.0551 -0.1064)
OKLCHoklch(69.22% 0.12 242.6)
XYZxyz(30.1183, 33.6790, 75.4200)
Luminance0.3368 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51A4E0 #E08D51
analogous
#51E0D5 #51A4E0 #515CE0
triadic
#51A4E0 #E051A4 #A4E051
tetradic
#51A4E0 #D551E0 #E08D51 #5CE051
square
#51A4E0 #D551E0 #E08D51 #5CE051
split-complementary
#51A4E0 #E0515C #E0D551
monochromatic
#1C669B #2588CF #51A4E0 #85BFE9 #B9DAF3

Accessibility & contrast

On white

2.71
#51A4E0 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.74
#51A4E0 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4E0
7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51A4E0#FFFFFF#000000##000000
##51A4E01.002.717.747.74
#FFFFFF2.711.0021.0021.00
#0000007.7421.001.001.00
##0000007.7421.001.001.00

Color blindness preview

Protanopia (red-blind)
#89A5E3
Deuteranopia (green-blind)
#7697DF
Tritanopia (blue-blind)
#00B3B9
Achromatopsia (no color)
#9D9D9D

Design tokens & code

CSS
--color: #51a4e0;
/* rgb */ color: rgb(81, 164, 224);
/* oklch */ color: oklch(69.2% 0.120 242.6);
Tailwind
colors: {
  custom: {
    50: '#8fbeea',
    500: '#51a4e0',
    950: '#000000',
  },
}
SCSS
$custom: #51a4e0;
$custom-light: #8fbeea;
$custom-dark: #000000;
JSON
{
  "hex": "#51a4e0",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 224
  },
  "hsl": {
    "h": 205.175,
    "s": 69.756,
    "l": 59.804
  },
  "oklch": {
    "l": 0.69224,
    "c": 0.11987,
    "h": 242.6
  },
  "luminance": 0.33682
}

Semantic roles & 50–950 ramp

primary
#51A4E0
secondary
#E2C2AB
accent
#863BED
background
#F9FBFE
surface
#F2F6FD
border
#CCD0D5
text
#0E1216
muted
#7E8184

Preview Lab

Preview with #51A4E0

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

Preview Lab → · Contrast checker → · Palette generator →

#51A4E0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva