#51AADD#51AADD

#51AADD is a light, moderate cyan. Relative luminance 0.357; OKLCH L 70.4% C 0.113 H 236.6°. Best body text is #000000 at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#51AADD
RGB	rgb(81, 170, 221)
HSL	hsl(202, 67%, 59%)
HSV	hsv(202, 63%, 87%)
CMYK	cmyk(63.3%, 23.1%, 0%, 13.3%)
CIE-LAB	lab(66.30, -11.27, -33.67)
CIE-LCH	lch(66.30, 35.51, 251.50°)
OKLab	oklab(70.45% -0.0623 -0.0945)
OKLCH	oklch(70.45% 0.113 236.6)
XYZ	xyz(30.8142, 35.7161, 73.6626)
Luminance	0.3572 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AADD #DD8451

analogous

#51DDCA #51AADD #5164DD

triadic

#51AADD #DD51AA #AADD51

tetradic

#51AADD #CA51DD #DD8451 #64DD51

square

#51AADD #CA51DD #DD8451 #64DD51

split-complementary

#51AADD #DD5164 #DDCA51

monochromatic

#1D6A96 #278EC9 #51AADD #84C3E7 #B7DCF1

Accessibility & contrast

On white

2.58

#51AADD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.14

#51AADD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AADD

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AADD	#FFFFFF	#000000	##000000
##51AADD	1.00	2.58	8.14	8.14
#FFFFFF	2.58	1.00	21.00	21.00
#000000	8.14	21.00	1.00	1.00
##000000	8.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92A9DF

Deuteranopia (green-blind)

#7F9BDC

Tritanopia (blue-blind)

#00B7BB

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #51aadd;
/* rgb */ color: rgb(81, 170, 221);
/* oklch */ color: oklch(70.4% 0.113 236.6);

Tailwind

colors: {
  custom: {
    50: '#8fc3e7',
    500: '#51aadd',
    950: '#000000',
  },
}

SCSS

$custom: #51aadd;
$custom-light: #8fc3e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51aadd",
  "rgb": {
    "r": 81,
    "g": 170,
    "b": 221
  },
  "hsl": {
    "h": 201.857,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.70447,
    "c": 0.11315,
    "h": 236.6
  },
  "luminance": 0.35719
}

Semantic roles & 50–950 ramp

primary

#51AADD

secondary

#E0BDAA

accent

#7C3EEA

background

#F9FBFE

surface

#F2F7FC

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51AADD

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

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