#5B99CE#5B99CE

#5B99CE is a light, moderate cyan. Relative luminance 0.295; OKLCH L 66.3% C 0.102 H 245.9°. Best body text is #000000 at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#5B99CE
RGB	rgb(91, 153, 206)
HSL	hsl(208, 54%, 58%)
HSV	hsv(208, 56%, 81%)
CMYK	cmyk(55.8%, 25.7%, 0%, 19.2%)
CIE-LAB	lab(61.19, -4.66, -33.27)
CIE-LCH	lch(61.19, 33.59, 262.03°)
OKLab	oklab(66.3% -0.0417 -0.0933)
OKLCH	oklch(66.3% 0.102 245.9)
XYZ	xyz(26.8422, 29.4605, 62.6525)
Luminance	0.2946 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B99CE #CE905B

analogous

#5BCEC9 #5B99CE #5B5FCE

triadic

#5B99CE #CE5B99 #99CE5B

tetradic

#5B99CE #C95BCE #CE905B #5FCE5B

square

#5B99CE #C95BCE #CE905B #5FCE5B

split-complementary

#5B99CE #CE5B5F #CEC95B

monochromatic

#285B86 #367BB6 #5B99CE #8AB6DC #B9D4EA

Accessibility & contrast

On white

3.05

#5B99CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.89

#5B99CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B99CE

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B99CE	#FFFFFF	#000000	##000000
##5B99CE	1.00	3.05	6.89	6.89
#FFFFFF	3.05	1.00	21.00	21.00
#000000	6.89	21.00	1.00	1.00
##000000	6.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#829AD0

Deuteranopia (green-blind)

#738FCD

Tritanopia (blue-blind)

#00A6AB

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #5b99ce;
/* rgb */ color: rgb(91, 153, 206);
/* oklch */ color: oklch(66.3% 0.102 245.9);

Tailwind

colors: {
  custom: {
    50: '#91b6dd',
    500: '#5b99ce',
    950: '#000000',
  },
}

SCSS

$custom: #5b99ce;
$custom-light: #91b6dd;
$custom-dark: #000000;

JSON

{
  "hex": "#5b99ce",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 206
  },
  "hsl": {
    "h": 207.652,
    "s": 53.991,
    "l": 58.235
  },
  "oklch": {
    "l": 0.66299,
    "c": 0.10217,
    "h": 245.9
  },
  "luminance": 0.29463
}

Semantic roles & 50–950 ramp

primary

#5B99CE

secondary

#D9C1AB

accent

#8E4ADD

background

#F9FBFD

surface

#F2F6FB

border

#CCD0D4

text

#0D1115

muted

#7E8083

Preview Lab

Preview with #5B99CE

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

Preview Lab → · Contrast checker → · Palette generator →