#51A7DF#51A7DF

#51A7DF is a light, moderate cyan. Relative luminance 0.347; OKLCH L 69.9% C 0.117 H 239.9°. Best body text is #000000 at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#51A7DF
RGB	rgb(81, 167, 223)
HSL	hsl(204, 69%, 60%)
HSV	hsv(204, 64%, 87%)
CMYK	cmyk(63.7%, 25.1%, 0%, 12.5%)
CIE-LAB	lab(65.52, -8.98, -35.98)
CIE-LCH	lch(65.52, 37.09, 255.98°)
OKLab	oklab(69.86% -0.0585 -0.1011)
OKLCH	oklch(69.86% 0.117 239.9)
XYZ	xyz(30.5263, 34.7114, 74.8889)
Luminance	0.3471 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A7DF #DF8951

analogous

#51DFD0 #51A7DF #5160DF

triadic

#51A7DF #DF51A7 #A7DF51

tetradic

#51A7DF #D051DF #DF8951 #60DF51

square

#51A7DF #D051DF #DF8951 #60DF51

split-complementary

#51A7DF #DF5160 #DFD051

monochromatic

#1C6899 #268BCD #51A7DF #85C1E9 #B8DBF2

Accessibility & contrast

On white

2.64

#51A7DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.94

#51A7DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A7DF

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A7DF	#FFFFFF	#000000	##000000
##51A7DF	1.00	2.64	7.94	7.94
#FFFFFF	2.64	1.00	21.00	21.00
#000000	7.94	21.00	1.00	1.00
##000000	7.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DA7E2

Deuteranopia (green-blind)

#7A99DE

Tritanopia (blue-blind)

#00B5BA

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51a7df;
/* rgb */ color: rgb(81, 167, 223);
/* oklch */ color: oklch(69.9% 0.117 239.9);

Tailwind

colors: {
  custom: {
    50: '#8fc1e9',
    500: '#51a7df',
    950: '#000000',
  },
}

SCSS

$custom: #51a7df;
$custom-light: #8fc1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#51a7df",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 223
  },
  "hsl": {
    "h": 203.662,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.69856,
    "c": 0.11686,
    "h": 239.9
  },
  "luminance": 0.34714
}

Semantic roles & 50–950 ramp

primary

#51A7DF

secondary

#E1C0AA

accent

#813CEC

background

#F9FBFE

surface

#F2F7FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A7DF

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

Preview Lab → · Contrast checker → · Palette generator →