#51A2E4#51A2E4

#51A2E4 is a light, vivid cyan. Relative luminance 0.332; OKLCH L 69.0% C 0.126 H 245.7°. Best body text is #000000 at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#51A2E4
RGB	rgb(81, 162, 228)
HSL	hsl(207, 73%, 61%)
HSV	hsv(207, 64%, 89%)
CMYK	cmyk(64.5%, 28.9%, 0%, 10.6%)
CIE-LAB	lab(64.31, -4.57, -40.63)
CIE-LCH	lch(64.31, 40.89, 263.58°)
OKLab	oklab(68.97% -0.0519 -0.1146)
OKLCH	oklch(68.97% 0.126 245.7)
XYZ	xyz(30.3120, 33.1884, 78.1923)
Luminance	0.3319 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A2E4 #E49351

analogous

#51E4DD #51A2E4 #5158E4

triadic

#51A2E4 #E451A2 #A2E451

tetradic

#51A2E4 #DD51E4 #E49351 #58E451

square

#51A2E4 #DD51E4 #E49351 #58E451

split-complementary

#51A2E4 #E45158 #E4DD51

monochromatic

#1964A2 #2185D7 #51A2E4 #86BEEC #BBDBF4

Accessibility & contrast

On white

2.75

#51A2E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.64

#51A2E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A2E4

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A2E4	#FFFFFF	#000000	##000000
##51A2E4	1.00	2.75	7.64	7.64
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.64	21.00	1.00	1.00
##000000	7.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#85A4E7

Deuteranopia (green-blind)

#7196E3

Tritanopia (blue-blind)

#00B2B9

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a2e4;
/* rgb */ color: rgb(81, 162, 228);
/* oklch */ color: oklch(69.0% 0.126 245.7);

Tailwind

colors: {
  custom: {
    50: '#90bded',
    500: '#51a2e4',
    950: '#000000',
  },
}

SCSS

$custom: #51a2e4;
$custom-light: #90bded;
$custom-dark: #000000;

JSON

{
  "hex": "#51a2e4",
  "rgb": {
    "r": 81,
    "g": 162,
    "b": 228
  },
  "hsl": {
    "h": 206.939,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.68971,
    "c": 0.12582,
    "h": 245.7
  },
  "luminance": 0.33191
}

Semantic roles & 50–950 ramp

primary

#51A2E4

secondary

#E4C6AC

accent

#6910D5

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A2E4

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

Preview Lab → · Contrast checker → · Palette generator →