#51A6DB#51A6DB

#51A6DB is a light, moderate cyan. Relative luminance 0.341; OKLCH L 69.4% C 0.113 H 238.7°. Best body text is #000000 at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#51A6DB
RGB	rgb(81, 166, 219)
HSL	hsl(203, 66%, 59%)
HSV	hsv(203, 63%, 86%)
CMYK	cmyk(63%, 24.2%, 0%, 14.1%)
CIE-LAB	lab(65.07, -9.72, -34.49)
CIE-LCH	lch(65.07, 35.83, 254.27°)
OKLab	oklab(69.44% -0.0588 -0.0968)
OKLCH	oklch(69.44% 0.113 238.7)
XYZ	xyz(29.8109, 34.1332, 72.0214)
Luminance	0.3414 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A6DB #DB8651

analogous

#51DBCB #51A6DB #5161DB

triadic

#51A6DB #DB51A6 #A6DB51

tetradic

#51A6DB #CB51DB #DB8651 #61DB51

square

#51A6DB #CB51DB #DB8651 #61DB51

split-complementary

#51A6DB #DB5161 #DBCB51

monochromatic

#1E6693 #298AC6 #51A6DB #84C0E5 #B6DAF0

Accessibility & contrast

On white

2.68

#51A6DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.83

#51A6DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A6DB

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A6DB	#FFFFFF	#000000	##000000
##51A6DB	1.00	2.68	7.83	7.83
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.83	21.00	1.00	1.00
##000000	7.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA6DD

Deuteranopia (green-blind)

#7B98DA

Tritanopia (blue-blind)

#00B3B8

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51a6db;
/* rgb */ color: rgb(81, 166, 219);
/* oklch */ color: oklch(69.4% 0.113 238.7);

Tailwind

colors: {
  custom: {
    50: '#8ec0e6',
    500: '#51a6db',
    950: '#000000',
  },
}

SCSS

$custom: #51a6db;
$custom-light: #8ec0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#51a6db",
  "rgb": {
    "r": 81,
    "g": 166,
    "b": 219
  },
  "hsl": {
    "h": 203.043,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.6944,
    "c": 0.11329,
    "h": 238.7
  },
  "luminance": 0.34136
}

Semantic roles & 50–950 ramp

primary

#51A6DB

secondary

#DFBEA9

accent

#803FE9

background

#F9FBFE

surface

#F2F7FC

border

#CCD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #51A6DB

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

Preview Lab → · Contrast checker → · Palette generator →