#5B99CC#5B99CC

#5B99CC is a light, moderate cyan. Relative luminance 0.294; OKLCH L 66.2% C 0.100 H 244.9°. Best body text is #000000 at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#5B99CC
RGB	rgb(91, 153, 204)
HSL	hsl(207, 53%, 58%)
HSV	hsv(207, 55%, 80%)
CMYK	cmyk(55.4%, 25%, 0%, 20%)
CIE-LAB	lab(61.10, -5.28, -32.28)
CIE-LCH	lch(61.10, 32.71, 260.71°)
OKLab	oklab(66.21% -0.0423 -0.0904)
OKLCH	oklch(66.21% 0.1 244.9)
XYZ	xyz(26.6008, 29.3640, 61.3810)
Luminance	0.2937 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B99CC #CC8E5B

analogous

#5BCCC7 #5B99CC #5B60CC

triadic

#5B99CC #CC5B99 #99CC5B

tetradic

#5B99CC #C75BCC #CC8E5B #60CC5B

square

#5B99CC #C75BCC #CC8E5B #60CC5B

split-complementary

#5B99CC #CC5B60 #CCC75B

monochromatic

#295B84 #377BB2 #5B99CC #8AB6DB #B8D3E9

Accessibility & contrast

On white

3.06

#5B99CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.87

#5B99CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B99CC

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B99CC	#FFFFFF	#000000	##000000
##5B99CC	1.00	3.06	6.87	6.87
#FFFFFF	3.06	1.00	21.00	21.00
#000000	6.87	21.00	1.00	1.00
##000000	6.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#839ACE

Deuteranopia (green-blind)

#748ECB

Tritanopia (blue-blind)

#00A5AA

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #5b99cc;
/* rgb */ color: rgb(91, 153, 204);
/* oklch */ color: oklch(66.2% 0.100 244.9);

Tailwind

colors: {
  custom: {
    50: '#91b6db',
    500: '#5b99cc',
    950: '#000000',
  },
}

SCSS

$custom: #5b99cc;
$custom-light: #91b6db;
$custom-dark: #000000;

JSON

{
  "hex": "#5b99cc",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 204
  },
  "hsl": {
    "h": 207.08,
    "s": 52.558,
    "l": 57.843
  },
  "oklch": {
    "l": 0.66205,
    "c": 0.09984,
    "h": 244.9
  },
  "luminance": 0.29366
}

Semantic roles & 50–950 ramp

primary

#5B99CC

secondary

#D8BFAB

accent

#8D4CDC

background

#F9FBFD

surface

#F2F6FB

border

#CCD0D4

text

#0D1115

muted

#7E8083

Preview Lab

Preview with #5B99CC

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

Preview Lab → · Contrast checker → · Palette generator →