#51A6DC#51A6DC

#51A6DC is a light, moderate cyan. Relative luminance 0.342; OKLCH L 69.5% C 0.114 H 239.2°. Best body text is #000000 at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#51A6DC
RGB	rgb(81, 166, 220)
HSL	hsl(203, 67%, 59%)
HSV	hsv(203, 63%, 86%)
CMYK	cmyk(63.2%, 24.5%, 0%, 13.7%)
CIE-LAB	lab(65.11, -9.40, -34.97)
CIE-LCH	lch(65.11, 36.21, 254.96°)
OKLab	oklab(69.49% -0.0585 -0.0982)
OKLCH	oklch(69.49% 0.114 239.2)
XYZ	xyz(29.9429, 34.1861, 72.7168)
Luminance	0.3419 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A6DC #DC8751

analogous

#51DCCC #51A6DC #5161DC

triadic

#51A6DC #DC51A6 #A6DC51

tetradic

#51A6DC #CC51DC #DC8751 #61DC51

square

#51A6DC #CC51DC #DC8751 #61DC51

split-complementary

#51A6DC #DC5161 #DCCC51

monochromatic

#1E6795 #288AC8 #51A6DC #84C0E6 #B7DAF0

Accessibility & contrast

On white

2.68

#51A6DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.84

#51A6DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A6DC

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A6DC	#FFFFFF	#000000	##000000
##51A6DC	1.00	2.68	7.84	7.84
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.84	21.00	1.00	1.00
##000000	7.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DA6DF

Deuteranopia (green-blind)

#7A98DB

Tritanopia (blue-blind)

#00B4B8

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51a6dc;
/* rgb */ color: rgb(81, 166, 220);
/* oklch */ color: oklch(69.5% 0.114 239.2);

Tailwind

colors: {
  custom: {
    50: '#8fc0e7',
    500: '#51a6dc',
    950: '#000000',
  },
}

SCSS

$custom: #51a6dc;
$custom-light: #8fc0e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51a6dc",
  "rgb": {
    "r": 81,
    "g": 166,
    "b": 220
  },
  "hsl": {
    "h": 203.309,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.69487,
    "c": 0.11432,
    "h": 239.2
  },
  "luminance": 0.34189
}

Semantic roles & 50–950 ramp

primary

#51A6DC

secondary

#E0BEA9

accent

#813EE9

background

#F9FBFE

surface

#F2F7FC

border

#CCD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #51A6DC

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

Preview Lab → · Contrast checker → · Palette generator →