#5B99DB#5B99DB

#5B99DB is a light, moderate cyan. Relative luminance 0.301; OKLCH L 66.9% C 0.118 H 251.3°. Best body text is #000000 at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#5B99DB
RGB	rgb(91, 153, 219)
HSL	hsl(211, 64%, 61%)
HSV	hsv(211, 58%, 86%)
CMYK	cmyk(58.4%, 30.1%, 0%, 14.1%)
CIE-LAB	lab(61.76, -0.55, -39.63)
CIE-LCH	lch(61.76, 39.63, 269.21°)
OKLab	oklab(66.94% -0.0377 -0.1117)
OKLCH	oklch(66.94% 0.118 251.3)
XYZ	xyz(28.4872, 30.1186, 71.3163)
Luminance	0.3012 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B99DB #DB9D5B

analogous

#5BD9DB #5B99DB #5D5BDB

triadic

#5B99DB #DB5B99 #99DB5B

tetradic

#5B99DB #DB5BD9 #DB9D5B #5BDB5D

square

#5B99DB #DB5BD9 #DB9D5B #5BDB5D

split-complementary

#5B99DB #DB5D5B #D9DB5B

monochromatic

#225C9A #2D7ACC #5B99DB #8DB8E6 #BFD7F1

Accessibility & contrast

On white

2.99

#5B99DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.02

#5B99DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5B99DB

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B99DB	#FFFFFF	#000000	##000000
##5B99DB	1.00	2.99	7.02	7.02
#FFFFFF	2.99	1.00	21.00	21.00
#000000	7.02	21.00	1.00	1.00
##000000	7.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D9CDE

Deuteranopia (green-blind)

#6C90DA

Tritanopia (blue-blind)

#00A8B0

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #5b99db;
/* rgb */ color: rgb(91, 153, 219);
/* oklch */ color: oklch(66.9% 0.118 251.3);

Tailwind

colors: {
  custom: {
    50: '#93b6e6',
    500: '#5b99db',
    950: '#000000',
  },
}

SCSS

$custom: #5b99db;
$custom-light: #93b6e6;
$custom-dark: #000000;

JSON

{
  "hex": "#5b99db",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 219
  },
  "hsl": {
    "h": 210.938,
    "s": 64,
    "l": 60.784
  },
  "oklch": {
    "l": 0.66936,
    "c": 0.11787,
    "h": 251.3
  },
  "luminance": 0.30121
}

Semantic roles & 50–950 ramp

primary

#5B99DB

secondary

#E1CAB1

accent

#761ACC

background

#F9FBFE

surface

#F2F6FC

border

#CCD0D5

text

#0E1116

muted

#7E8084

Preview Lab

Preview with #5B99DB

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

Preview Lab → · Contrast checker → · Palette generator →