#51A3D7#51A3D7

#51A3D7 is a light, moderate cyan. Relative luminance 0.329; OKLCH L 68.6% C 0.111 H 239.1°. Best body text is #000000 at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#51A3D7
RGB	rgb(81, 163, 215)
HSL	hsl(203, 63%, 58%)
HSV	hsv(203, 62%, 84%)
CMYK	cmyk(62.3%, 24.2%, 0%, 15.7%)
CIE-LAB	lab(64.04, -9.34, -33.88)
CIE-LCH	lch(64.04, 35.14, 254.58°)
OKLab	oklab(68.57% -0.057 -0.0951)
OKLCH	oklch(68.57% 0.111 239.1)
XYZ	xyz(28.7516, 32.8472, 69.1017)
Luminance	0.3285 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3D7 #D78551

analogous

#51D7C8 #51A3D7 #5160D7

triadic

#51A3D7 #D751A3 #A3D751

tetradic

#51A3D7 #C851D7 #D78551 #60D751

square

#51A3D7 #C851D7 #D78551 #60D751

split-complementary

#51A3D7 #D75160 #D7C851

monochromatic

#20638D #2C86BF #51A3D7 #83BDE2 #B5D8EE

Accessibility & contrast

On white

2.77

#51A3D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.57

#51A3D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3D7

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3D7	#FFFFFF	#000000	##000000
##51A3D7	1.00	2.77	7.57	7.57
#FFFFFF	2.77	1.00	21.00	21.00
#000000	7.57	21.00	1.00	1.00
##000000	7.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8BA3D9

Deuteranopia (green-blind)

#7995D6

Tritanopia (blue-blind)

#00B0B5

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #51a3d7;
/* rgb */ color: rgb(81, 163, 215);
/* oklch */ color: oklch(68.6% 0.111 239.1);

Tailwind

colors: {
  custom: {
    50: '#8ebee3',
    500: '#51a3d7',
    950: '#000000',
  },
}

SCSS

$custom: #51a3d7;
$custom-light: #8ebee3;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3d7",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 215
  },
  "hsl": {
    "h": 203.284,
    "s": 62.617,
    "l": 58.039
  },
  "oklch": {
    "l": 0.68568,
    "c": 0.11087,
    "h": 239.1
  },
  "luminance": 0.3285
}

Semantic roles & 50–950 ramp

primary

#51A3D7

secondary

#DDBCA7

accent

#8242E6

background

#F9FBFD

surface

#F2F6FB

border

#CCD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A3D7

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

Preview Lab → · Contrast checker → · Palette generator →