#51A3DB#51A3DB

#51A3DB is a light, moderate cyan. Relative luminance 0.331; OKLCH L 68.8% C 0.115 H 241.1°. Best body text is #000000 at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#51A3DB
RGB	rgb(81, 163, 219)
HSL	hsl(204, 66%, 59%)
HSV	hsv(204, 63%, 86%)
CMYK	cmyk(63%, 25.6%, 0%, 14.1%)
CIE-LAB	lab(64.21, -8.06, -35.83)
CIE-LCH	lch(64.21, 36.72, 257.32°)
OKLab	oklab(68.76% -0.0557 -0.1007)
OKLCH	oklch(68.76% 0.115 241.1)
XYZ	xyz(29.2719, 33.0553, 71.8418)
Luminance	0.3306 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3DB #DB8951

analogous

#51DBCE #51A3DB #515EDB

triadic

#51A3DB #DB51A3 #A3DB51

tetradic

#51A3DB #CE51DB #DB8951 #5EDB51

square

#51A3DB #CE51DB #DB8951 #5EDB51

split-complementary

#51A3DB #DB515E #DBCE51

monochromatic

#1E6493 #2986C6 #51A3DB #84BEE5 #B6D9F0

Accessibility & contrast

On white

2.76

#51A3DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.61

#51A3DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3DB

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3DB	#FFFFFF	#000000	##000000
##51A3DB	1.00	2.76	7.61	7.61
#FFFFFF	2.76	1.00	21.00	21.00
#000000	7.61	21.00	1.00	1.00
##000000	7.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8AA3DE

Deuteranopia (green-blind)

#7796DA

Tritanopia (blue-blind)

#00B1B6

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a3db;
/* rgb */ color: rgb(81, 163, 219);
/* oklch */ color: oklch(68.8% 0.115 241.1);

Tailwind

colors: {
  custom: {
    50: '#8ebee6',
    500: '#51a3db',
    950: '#000000',
  },
}

SCSS

$custom: #51a3db;
$custom-light: #8ebee6;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3db",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 219
  },
  "hsl": {
    "h": 204.348,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.68757,
    "c": 0.11509,
    "h": 241.1
  },
  "luminance": 0.33058
}

Semantic roles & 50–950 ramp

primary

#51A3DB

secondary

#DFBFA9

accent

#843FE9

background

#F9FBFE

surface

#F2F6FC

border

#CCD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #51A3DB

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

Preview Lab → · Contrast checker → · Palette generator →