#51A6DF#51A6DF

#51A6DF is a light, moderate cyan. Relative luminance 0.343; OKLCH L 69.6% C 0.117 H 240.7°. Best body text is #000000 at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#51A6DF
RGB	rgb(81, 166, 223)
HSL	hsl(204, 69%, 60%)
HSV	hsv(204, 64%, 87%)
CMYK	cmyk(63.7%, 25.6%, 0%, 12.5%)
CIE-LAB	lab(65.24, -8.43, -36.43)
CIE-LCH	lch(65.24, 37.39, 256.97°)
OKLab	oklab(69.63% -0.0575 -0.1024)
OKLCH	oklch(69.63% 0.117 240.7)
XYZ	xyz(30.3438, 34.3464, 74.8281)
Luminance	0.3435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A6DF #DF8A51

analogous

#51DFD1 #51A6DF #515FDF

triadic

#51A6DF #DF51A6 #A6DF51

tetradic

#51A6DF #D151DF #DF8A51 #5FDF51

square

#51A6DF #D151DF #DF8A51 #5FDF51

split-complementary

#51A6DF #DF515F #DFD151

monochromatic

#1C6799 #268ACD #51A6DF #85C0E9 #B8DBF2

Accessibility & contrast

On white

2.67

#51A6DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.87

#51A6DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A6DF

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A6DF	#FFFFFF	#000000	##000000
##51A6DF	1.00	2.67	7.87	7.87
#FFFFFF	2.67	1.00	21.00	21.00
#000000	7.87	21.00	1.00	1.00
##000000	7.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CA6E2

Deuteranopia (green-blind)

#7998DE

Tritanopia (blue-blind)

#00B4BA

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51a6df;
/* rgb */ color: rgb(81, 166, 223);
/* oklch */ color: oklch(69.6% 0.117 240.7);

Tailwind

colors: {
  custom: {
    50: '#8fc0e9',
    500: '#51a6df',
    950: '#000000',
  },
}

SCSS

$custom: #51a6df;
$custom-light: #8fc0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#51a6df",
  "rgb": {
    "r": 81,
    "g": 166,
    "b": 223
  },
  "hsl": {
    "h": 204.085,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.69629,
    "c": 0.11748,
    "h": 240.7
  },
  "luminance": 0.34349
}

Semantic roles & 50–950 ramp

primary

#51A6DF

secondary

#E1C0AA

accent

#833CEC

background

#F9FBFE

surface

#F2F7FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A6DF

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

Preview Lab → · Contrast checker → · Palette generator →