#51A1DD#51A1DD

#51A1DD is a light, moderate cyan. Relative luminance 0.325; OKLCH L 68.4% C 0.119 H 243.5°. Best body text is #000000 at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#51A1DD
RGB	rgb(81, 161, 221)
HSL	hsl(206, 67%, 59%)
HSV	hsv(206, 63%, 87%)
CMYK	cmyk(63.3%, 27.1%, 0%, 13.3%)
CIE-LAB	lab(63.72, -6.30, -37.70)
CIE-LCH	lch(63.72, 38.22, 260.52°)
OKLab	oklab(68.4% -0.053 -0.1061)
OKLCH	oklch(68.4% 0.119 243.5)
XYZ	xyz(29.1844, 32.4566, 73.1193)
Luminance	0.3246 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A1DD #DD8D51

analogous

#51DDD3 #51A1DD #515BDD

triadic

#51A1DD #DD51A1 #A1DD51

tetradic

#51A1DD #D351DD #DD8D51 #5BDD51

square

#51A1DD #D351DD #DD8D51 #5BDD51

split-complementary

#51A1DD #DD515B #DDD351

monochromatic

#1D6296 #2784C9 #51A1DD #84BDE7 #B7D8F1

Accessibility & contrast

On white

2.80

#51A1DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.49

#51A1DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A1DD

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A1DD	#FFFFFF	#000000	##000000
##51A1DD	1.00	2.80	7.49	7.49
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.49	21.00	1.00	1.00
##000000	7.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86A2E0

Deuteranopia (green-blind)

#7394DC

Tritanopia (blue-blind)

#00B0B6

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #51a1dd;
/* rgb */ color: rgb(81, 161, 221);
/* oklch */ color: oklch(68.4% 0.119 243.5);

Tailwind

colors: {
  custom: {
    50: '#8fbce8',
    500: '#51a1dd',
    950: '#000000',
  },
}

SCSS

$custom: #51a1dd;
$custom-light: #8fbce8;
$custom-dark: #000000;

JSON

{
  "hex": "#51a1dd",
  "rgb": {
    "r": 81,
    "g": 161,
    "b": 221
  },
  "hsl": {
    "h": 205.714,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.684,
    "c": 0.11863,
    "h": 243.5
  },
  "luminance": 0.3246
}

Semantic roles & 50–950 ramp

primary

#51A1DD

secondary

#E0C1AA

accent

#883EEA

background

#F9FBFE

surface

#F2F6FC

border

#CCD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #51A1DD

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

Preview Lab → · Contrast checker → · Palette generator →