#51A7DE#51A7DE

#51A7DE is a light, moderate cyan. Relative luminance 0.347; OKLCH L 69.8% C 0.116 H 239.5°. Best body text is #000000 at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#51A7DE
RGB	rgb(81, 167, 222)
HSL	hsl(203, 68%, 59%)
HSV	hsv(203, 64%, 87%)
CMYK	cmyk(63.5%, 24.8%, 0%, 12.9%)
CIE-LAB	lab(65.48, -9.30, -35.50)
CIE-LCH	lch(65.48, 36.70, 255.31°)
OKLab	oklab(69.81% -0.0588 -0.0997)
OKLCH	oklch(69.81% 0.116 239.5)
XYZ	xyz(30.3918, 34.6576, 74.1810)
Luminance	0.3466 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A7DE #DE8851

analogous

#51DECE #51A7DE #5161DE

triadic

#51A7DE #DE51A7 #A7DE51

tetradic

#51A7DE #CE51DE #DE8851 #61DE51

square

#51A7DE #CE51DE #DE8851 #61DE51

split-complementary

#51A7DE #DE5161 #DECE51

monochromatic

#1D6898 #278BCB #51A7DE #84C1E8 #B8DBF2

Accessibility & contrast

On white

2.65

#51A7DE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.93

#51A7DE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A7DE

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A7DE	#FFFFFF	#000000	##000000
##51A7DE	1.00	2.65	7.93	7.93
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.93	21.00	1.00	1.00
##000000	7.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA7E1

Deuteranopia (green-blind)

#7A99DD

Tritanopia (blue-blind)

#00B5BA

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51a7de;
/* rgb */ color: rgb(81, 167, 222);
/* oklch */ color: oklch(69.8% 0.116 239.5);

Tailwind

colors: {
  custom: {
    50: '#8fc1e8',
    500: '#51a7de',
    950: '#000000',
  },
}

SCSS

$custom: #51a7de;
$custom-light: #8fc1e8;
$custom-dark: #000000;

JSON

{
  "hex": "#51a7de",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 222
  },
  "hsl": {
    "h": 203.404,
    "s": 68.116,
    "l": 59.412
  },
  "oklch": {
    "l": 0.69809,
    "c": 0.11582,
    "h": 239.5
  },
  "luminance": 0.34661
}

Semantic roles & 50–950 ramp

primary

#51A7DE

secondary

#E1BFAA

accent

#813DEB

background

#F9FBFE

surface

#F2F7FC

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A7DE

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

Preview Lab → · Contrast checker → · Palette generator →