#5191D8#5191D8

#5191D8 is a light, vivid cyan. Relative luminance 0.270; OKLCH L 64.6% C 0.126 H 252.5°. Best body text is #000000 at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#5191D8
RGB	rgb(81, 145, 216)
HSL	hsl(212, 63%, 58%)
HSV	hsv(212, 63%, 85%)
CMYK	cmyk(62.5%, 32.9%, 0%, 15.3%)
CIE-LAB	lab(58.93, 1.21, -42.42)
CIE-LCH	lch(58.93, 42.44, 271.63°)
OKLab	oklab(64.56% -0.0379 -0.12)
OKLCH	oklch(64.56% 0.126 252.5)
XYZ	xyz(25.9089, 26.9555, 68.7900)
Luminance	0.2696 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5191D8 #D89851

analogous

#51D4D8 #5191D8 #5551D8

triadic

#5191D8 #D85191 #91D851

tetradic

#5191D8 #D851D4 #D89851 #51D855

square

#5191D8 #D851D4 #D89851 #51D855

split-complementary

#5191D8 #D85551 #D4D851

monochromatic

#20548F #2B72C1 #5191D8 #83B1E3 #B5D0EE

Accessibility & contrast

On white

3.29

#5191D8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.39

#5191D8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5191D8

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5191D8	#FFFFFF	#000000	##000000
##5191D8	1.00	3.29	6.39	6.39
#FFFFFF	3.29	1.00	21.00	21.00
#000000	6.39	21.00	1.00	1.00
##000000	6.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7395DB

Deuteranopia (green-blind)

#6088D7

Tritanopia (blue-blind)

#00A1AB

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #5191d8;
/* rgb */ color: rgb(81, 145, 216);
/* oklch */ color: oklch(64.6% 0.126 252.5);

Tailwind

colors: {
  custom: {
    50: '#8eb0e4',
    500: '#5191d8',
    950: '#000000',
  },
}

SCSS

$custom: #5191d8;
$custom-light: #8eb0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#5191d8",
  "rgb": {
    "r": 81,
    "g": 145,
    "b": 216
  },
  "hsl": {
    "h": 211.556,
    "s": 63.38,
    "l": 58.235
  },
  "oklch": {
    "l": 0.6456,
    "c": 0.12582,
    "h": 252.5
  },
  "luminance": 0.26958
}

Semantic roles & 50–950 ramp

primary

#5191D8

secondary

#DDC4A8

accent

#9841E6

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0D1015

muted

#7E7F84

Preview Lab

Preview with #5191D8

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

Preview Lab → · Contrast checker → · Palette generator →