#51A3F2#51A3F2

#51A3F2 is a light, vivid cyan. Relative luminance 0.344; OKLCH L 69.9% C 0.141 H 249.8°. Best body text is #000000 at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#51A3F2
RGB	rgb(81, 163, 242)
HSL	hsl(209, 86%, 63%)
HSV	hsv(209, 67%, 95%)
CMYK	cmyk(66.5%, 32.6%, 0%, 5.1%)
CIE-LAB	lab(65.24, -0.49, -46.86)
CIE-LCH	lch(65.24, 46.87, 269.40°)
OKLab	oklab(69.91% -0.0489 -0.1328)
OKLCH	oklch(69.91% 0.141 249.8)
XYZ	xyz(32.5116, 34.3512, 88.9042)
Luminance	0.3436 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3F2 #F2A051

analogous

#51F2F0 #51A3F2 #5152F2

triadic

#51A3F2 #F251A3 #A3F251

tetradic

#51A3F2 #F051F2 #F2A051 #52F251

square

#51A3F2 #F051F2 #F2A051 #52F251

split-complementary

#51A3F2 #F25152 #F2F051

monochromatic

#0E66BB #1885EE #51A3F2 #8AC1F6 #C3DFFB

Accessibility & contrast

On white

2.67

#51A3F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.87

#51A3F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3F2

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3F2	#FFFFFF	#000000	##000000
##51A3F2	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)

#80A7F5

Deuteranopia (green-blind)

#6A97F0

Tritanopia (blue-blind)

#00B6BF

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51a3f2;
/* rgb */ color: rgb(81, 163, 242);
/* oklch */ color: oklch(69.9% 0.141 249.8);

Tailwind

colors: {
  custom: {
    50: '#92bdf6',
    500: '#51a3f2',
    950: '#000000',
  },
}

SCSS

$custom: #51a3f2;
$custom-light: #92bdf6;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3f2",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 242
  },
  "hsl": {
    "h": 209.441,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.69913,
    "c": 0.14147,
    "h": 249.8
  },
  "luminance": 0.34355
}

Semantic roles & 50–950 ramp

primary

#51A3F2

secondary

#ECCFB3

accent

#7103E3

background

#F9FBFF

surface

#F2F6FE

border

#CCD0D6

text

#0E1217

muted

#7E8185

Preview Lab

Preview with #51A3F2

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

Preview Lab → · Contrast checker → · Palette generator →