#5B99EC#5B99EC

#5B99EC is a light, vivid cyan. Relative luminance 0.311; OKLCH L 67.8% C 0.139 H 256.2°. Best body text is #000000 at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#5B99EC
RGB	rgb(91, 153, 236)
HSL	hsl(214, 79%, 64%)
HSV	hsv(214, 61%, 93%)
CMYK	cmyk(61.4%, 35.2%, 0%, 7.5%)
CIE-LAB	lab(62.56, 4.97, -47.77)
CIE-LCH	lch(62.56, 48.03, 275.94°)
OKLab	oklab(67.83% -0.0332 -0.1354)
OKLCH	oklch(67.83% 0.139 256.2)
XYZ	xyz(30.8405, 31.0599, 83.7105)
Luminance	0.3106 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B99EC #ECAE5B

analogous

#5BE1EC #5B99EC #665BEC

triadic

#5B99EC #EC5B99 #99EC5B

tetradic

#5B99EC #EC5BE1 #ECAE5B #5BEC66

square

#5B99EC #EC5BE1 #ECAE5B #5BEC66

split-complementary

#5B99EC #EC665B #E1EC5B

monochromatic

#155BB7 #2477E6 #5B99EC #92BBF2 #C9DDF9

Accessibility & contrast

On white

2.91

#5B99EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.21

#5B99EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5B99EC

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B99EC	#FFFFFF	#000000	##000000
##5B99EC	1.00	2.91	7.21	7.21
#FFFFFF	2.91	1.00	21.00	21.00
#000000	7.21	21.00	1.00	1.00
##000000	7.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#759FEF

Deuteranopia (green-blind)

#6291EA

Tritanopia (blue-blind)

#00ACB7

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #5b99ec;
/* rgb */ color: rgb(91, 153, 236);
/* oklch */ color: oklch(67.8% 0.139 256.2);

Tailwind

colors: {
  custom: {
    50: '#95b6f2',
    500: '#5b99ec',
    950: '#000000',
  },
}

SCSS

$custom: #5b99ec;
$custom-light: #95b6f2;
$custom-dark: #000000;

JSON

{
  "hex": "#5b99ec",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 236
  },
  "hsl": {
    "h": 214.345,
    "s": 79.235,
    "l": 64.118
  },
  "oklch": {
    "l": 0.67826,
    "c": 0.1394,
    "h": 256.2
  },
  "luminance": 0.31063
}

Semantic roles & 50–950 ramp

primary

#5B99EC

secondary

#EBD5B8

accent

#820ADC

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1117

muted

#7E8085

Preview Lab

Preview with #5B99EC

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

Preview Lab → · Contrast checker → · Palette generator →