#51A3DF#51A3DF

#51A3DF is a light, moderate cyan. Relative luminance 0.333; OKLCH L 69.0% C 0.119 H 242.9°. Best body text is #000000 at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#51A3DF
RGB	rgb(81, 163, 223)
HSL	hsl(205, 69%, 60%)
HSV	hsv(205, 64%, 87%)
CMYK	cmyk(63.7%, 26.9%, 0%, 12.5%)
CIE-LAB	lab(64.38, -6.76, -37.77)
CIE-LCH	lch(64.38, 38.37, 259.85°)
OKLab	oklab(68.95% -0.0544 -0.1063)
OKLCH	oklch(68.95% 0.119 242.9)
XYZ	xyz(29.8048, 33.2684, 74.6485)
Luminance	0.3327 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3DF #DF8D51

analogous

#51DFD4 #51A3DF #515CDF

triadic

#51A3DF #DF51A3 #A3DF51

tetradic

#51A3DF #D451DF #DF8D51 #5CDF51

square

#51A3DF #D451DF #DF8D51 #5CDF51

split-complementary

#51A3DF #DF515C #DFD451

monochromatic

#1C6499 #2686CD #51A3DF #85BEE9 #B8DAF2

Accessibility & contrast

On white

2.74

#51A3DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.65

#51A3DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3DF

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3DF	#FFFFFF	#000000	##000000
##51A3DF	1.00	2.74	7.65	7.65
#FFFFFF	2.74	1.00	21.00	21.00
#000000	7.65	21.00	1.00	1.00
##000000	7.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88A4E2

Deuteranopia (green-blind)

#7596DE

Tritanopia (blue-blind)

#00B2B8

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a3df;
/* rgb */ color: rgb(81, 163, 223);
/* oklch */ color: oklch(69.0% 0.119 242.9);

Tailwind

colors: {
  custom: {
    50: '#8fbee9',
    500: '#51a3df',
    950: '#000000',
  },
}

SCSS

$custom: #51a3df;
$custom-light: #8fbee9;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3df",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 223
  },
  "hsl": {
    "h": 205.352,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.6895,
    "c": 0.11945,
    "h": 242.9
  },
  "luminance": 0.33271
}

Semantic roles & 50–950 ramp

primary

#51A3DF

secondary

#E1C2AA

accent

#863CEC

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A3DF

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

Preview Lab → · Contrast checker → · Palette generator →