#51B7F2#51B7F2

#51B7F2 is a light, vivid cyan. Relative luminance 0.420; OKLCH L 74.4% C 0.127 H 237.4°. Best body text is #000000 at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#51B7F2
RGB	rgb(81, 183, 242)
HSL	hsl(202, 86%, 63%)
HSV	hsv(202, 67%, 95%)
CMYK	cmyk(66.5%, 24.4%, 0%, 5.1%)
CIE-LAB	lab(70.89, -11.59, -38.02)
CIE-LCH	lch(70.89, 39.75, 253.05°)
OKLab	oklab(74.37% -0.0684 -0.1069)
OKLCH	oklch(74.37% 0.127 237.4)
XYZ	xyz(36.3476, 42.0232, 90.1829)
Luminance	0.4203 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B7F2 #F28C51

analogous

#51F2DD #51B7F2 #5166F2

triadic

#51B7F2 #F251B7 #B7F251

tetradic

#51B7F2 #DD51F2 #F28C51 #66F251

square

#51B7F2 #DD51F2 #F28C51 #66F251

split-complementary

#51B7F2 #F25166 #F2DD51

monochromatic

#0E7BBB #189FEE #51B7F2 #8ACFF6 #C3E6FB

Accessibility & contrast

On white

2.23

#51B7F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.41

#51B7F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B7F2

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B7F2	#FFFFFF	#000000	##000000
##51B7F2	1.00	2.23	9.41	9.41
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.41	21.00	1.00	1.00
##000000	9.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB6F5

Deuteranopia (green-blind)

#85A6F1

Tritanopia (blue-blind)

#00C6CB

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #51b7f2;
/* rgb */ color: rgb(81, 183, 242);
/* oklch */ color: oklch(74.4% 0.127 237.4);

Tailwind

colors: {
  custom: {
    50: '#92ccf6',
    500: '#51b7f2',
    950: '#000000',
  },
}

SCSS

$custom: #51b7f2;
$custom-light: #92ccf6;
$custom-dark: #000000;

JSON

{
  "hex": "#51b7f2",
  "rgb": {
    "r": 81,
    "g": 183,
    "b": 242
  },
  "hsl": {
    "h": 201.988,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.74372,
    "c": 0.12694,
    "h": 237.4
  },
  "luminance": 0.42027
}

Semantic roles & 50–950 ramp

primary

#51B7F2

secondary

#ECC8B3

accent

#5503E3

background

#F9FCFF

surface

#F2F8FE

border

#CCD1D6

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #51B7F2

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

Preview Lab → · Contrast checker → · Palette generator →