#51A3D5#51A3D5

#51A3D5 is a light, moderate cyan. Relative luminance 0.327; OKLCH L 68.5% C 0.109 H 238.0°. Best body text is #000000 at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#51A3D5
RGB	rgb(81, 163, 213)
HSL	hsl(203, 61%, 58%)
HSV	hsv(203, 62%, 84%)
CMYK	cmyk(62%, 23.5%, 0%, 16.5%)
CIE-LAB	lab(63.95, -9.98, -32.90)
CIE-LCH	lch(63.95, 34.38, 253.12°)
OKLab	oklab(68.47% -0.0577 -0.0923)
OKLCH	oklch(68.47% 0.109 238)
XYZ	xyz(28.4962, 32.7450, 67.7566)
Luminance	0.3275 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3D5 #D58351

analogous

#51D5C5 #51A3D5 #5161D5

triadic

#51A3D5 #D551A3 #A3D551

tetradic

#51A3D5 #C551D5 #D58351 #61D551

square

#51A3D5 #C551D5 #D58351 #61D551

split-complementary

#51A3D5 #D55161 #D5C551

monochromatic

#21638A #2D86BC #51A3D5 #82BDE1 #B4D7ED

Accessibility & contrast

On white

2.78

#51A3D5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.55

#51A3D5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3D5

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3D5	#FFFFFF	#000000	##000000
##51A3D5	1.00	2.78	7.55	7.55
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.55	21.00	1.00	1.00
##000000	7.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CA2D7

Deuteranopia (green-blind)

#7A95D4

Tritanopia (blue-blind)

#00B0B4

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #51a3d5;
/* rgb */ color: rgb(81, 163, 213);
/* oklch */ color: oklch(68.5% 0.109 238.0);

Tailwind

colors: {
  custom: {
    50: '#8ebee2',
    500: '#51a3d5',
    950: '#000000',
  },
}

SCSS

$custom: #51a3d5;
$custom-light: #8ebee2;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3d5",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 213
  },
  "hsl": {
    "h": 202.727,
    "s": 61.111,
    "l": 57.647
  },
  "oklch": {
    "l": 0.68474,
    "c": 0.10881,
    "h": 238
  },
  "luminance": 0.32748
}

Semantic roles & 50–950 ramp

primary

#51A3D5

secondary

#DBBAA6

accent

#8044E4

background

#F9FBFD

surface

#F2F6FB

border

#CCD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A3D5

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

Preview Lab → · Contrast checker → · Palette generator →