#51A7DC#51A7DC

#51A7DC is a light, moderate cyan. Relative luminance 0.346; OKLCH L 69.7% C 0.114 H 238.5°. Best body text is #000000 at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#51A7DC
RGB	rgb(81, 167, 220)
HSL	hsl(203, 67%, 59%)
HSV	hsv(203, 63%, 86%)
CMYK	cmyk(63.2%, 24.1%, 0%, 13.7%)
CIE-LAB	lab(65.40, -9.95, -34.53)
CIE-LCH	lch(65.40, 35.93, 253.93°)
OKLab	oklab(69.72% -0.0595 -0.0969)
OKLCH	oklch(69.72% 0.114 238.5)
XYZ	xyz(30.1254, 34.5510, 72.7777)
Luminance	0.3455 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A7DC #DC8651

analogous

#51DCCC #51A7DC #5162DC

triadic

#51A7DC #DC51A7 #A7DC51

tetradic

#51A7DC #CC51DC #DC8651 #62DC51

square

#51A7DC #CC51DC #DC8651 #62DC51

split-complementary

#51A7DC #DC5162 #DCCC51

monochromatic

#1E6795 #288BC8 #51A7DC #84C1E6 #B7DBF0

Accessibility & contrast

On white

2.65

#51A7DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.91

#51A7DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A7DC

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A7DC	#FFFFFF	#000000	##000000
##51A7DC	1.00	2.65	7.91	7.91
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.91	21.00	1.00	1.00
##000000	7.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FA7DE

Deuteranopia (green-blind)

#7B99DB

Tritanopia (blue-blind)

#00B4B9

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51a7dc;
/* rgb */ color: rgb(81, 167, 220);
/* oklch */ color: oklch(69.7% 0.114 238.5);

Tailwind

colors: {
  custom: {
    50: '#8fc1e7',
    500: '#51a7dc',
    950: '#000000',
  },
}

SCSS

$custom: #51a7dc;
$custom-light: #8fc1e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51a7dc",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 220
  },
  "hsl": {
    "h": 202.878,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.69715,
    "c": 0.11375,
    "h": 238.5
  },
  "luminance": 0.34554
}

Semantic roles & 50–950 ramp

primary

#51A7DC

secondary

#E0BEA9

accent

#803EE9

background

#F9FBFE

surface

#F2F7FC

border

#CCD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #51A7DC

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

Preview Lab → · Contrast checker → · Palette generator →