#5B99CF#5B99CF

#5B99CF is a light, moderate cyan. Relative luminance 0.295; OKLCH L 66.3% C 0.103 H 246.4°. Best body text is #000000 at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#5B99CF
RGB	rgb(91, 153, 207)
HSL	hsl(208, 55%, 58%)
HSV	hsv(208, 56%, 81%)
CMYK	cmyk(56%, 26.1%, 0%, 18.8%)
CIE-LAB	lab(61.23, -4.34, -33.76)
CIE-LCH	lch(61.23, 34.04, 262.67°)
OKLab	oklab(66.35% -0.0413 -0.0947)
OKLCH	oklch(66.35% 0.103 246.4)
XYZ	xyz(26.9640, 29.5093, 63.2943)
Luminance	0.2951 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B99CF #CF915B

analogous

#5BCFCB #5B99CF #5B5FCF

triadic

#5B99CF #CF5B99 #99CF5B

tetradic

#5B99CF #CB5BCF #CF915B #5FCF5B

square

#5B99CF #CB5BCF #CF915B #5FCF5B

split-complementary

#5B99CF #CF5B5F #CFCB5B

monochromatic

#285B88 #367BB7 #5B99CF #8AB6DD #BAD4EB

Accessibility & contrast

On white

3.04

#5B99CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.90

#5B99CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B99CF

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B99CF	#FFFFFF	#000000	##000000
##5B99CF	1.00	3.04	6.90	6.90
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.90	21.00	1.00	1.00
##000000	6.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#829AD1

Deuteranopia (green-blind)

#738FCE

Tritanopia (blue-blind)

#00A6AC

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #5b99cf;
/* rgb */ color: rgb(91, 153, 207);
/* oklch */ color: oklch(66.3% 0.103 246.4);

Tailwind

colors: {
  custom: {
    50: '#92b6de',
    500: '#5b99cf',
    950: '#000000',
  },
}

SCSS

$custom: #5b99cf;
$custom-light: #92b6de;
$custom-dark: #000000;

JSON

{
  "hex": "#5b99cf",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 207
  },
  "hsl": {
    "h": 207.931,
    "s": 54.717,
    "l": 58.431
  },
  "oklch": {
    "l": 0.66347,
    "c": 0.10334,
    "h": 246.4
  },
  "luminance": 0.29512
}

Semantic roles & 50–950 ramp

primary

#5B99CF

secondary

#DAC1AC

accent

#8F4ADE

background

#F9FBFD

surface

#F2F6FB

border

#CCD0D4

text

#0D1115

muted

#7E8083

Preview Lab

Preview with #5B99CF

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

Preview Lab → · Contrast checker → · Palette generator →