#51A3E1#51A3E1

#51A3E1 is a light, vivid cyan. Relative luminance 0.334; OKLCH L 69.0% C 0.122 H 243.8°. Best body text is #000000 at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#51A3E1
RGB	rgb(81, 163, 225)
HSL	hsl(206, 71%, 60%)
HSV	hsv(206, 64%, 88%)
CMYK	cmyk(64%, 27.6%, 0%, 11.8%)
CIE-LAB	lab(64.46, -6.11, -38.74)
CIE-LCH	lch(64.46, 39.22, 261.03°)
OKLab	oklab(69.05% -0.0538 -0.1091)
OKLCH	oklch(69.05% 0.122 243.8)
XYZ	xyz(30.0760, 33.3769, 76.0769)
Luminance	0.3338 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3E1 #E18F51

analogous

#51E1D7 #51A3E1 #515BE1

triadic

#51A3E1 #E151A3 #A3E151

tetradic

#51A3E1 #D751E1 #E18F51 #5BE151

square

#51A3E1 #D751E1 #E18F51 #5BE151

split-complementary

#51A3E1 #E1515B #E1D751

monochromatic

#1B659D #2486D1 #51A3E1 #85BFEA #B9DAF3

Accessibility & contrast

On white

2.74

#51A3E1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.68

#51A3E1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3E1

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3E1	#FFFFFF	#000000	##000000
##51A3E1	1.00	2.74	7.68	7.68
#FFFFFF	2.74	1.00	21.00	21.00
#000000	7.68	21.00	1.00	1.00
##000000	7.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#87A4E4

Deuteranopia (green-blind)

#7496E0

Tritanopia (blue-blind)

#00B2B9

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a3e1;
/* rgb */ color: rgb(81, 163, 225);
/* oklch */ color: oklch(69.0% 0.122 243.8);

Tailwind

colors: {
  custom: {
    50: '#8fbeea',
    500: '#51a3e1',
    950: '#000000',
  },
}

SCSS

$custom: #51a3e1;
$custom-light: #8fbeea;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3e1",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 225
  },
  "hsl": {
    "h": 205.833,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.69047,
    "c": 0.12168,
    "h": 243.8
  },
  "luminance": 0.3338
}

Semantic roles & 50–950 ramp

primary

#51A3E1

secondary

#E3C3AB

accent

#873AED

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A3E1

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

Preview Lab → · Contrast checker → · Palette generator →