#5B99EB#5B99EB

#5B99EB is a light, vivid cyan. Relative luminance 0.310; OKLCH L 67.8% C 0.138 H 256.0°. Best body text is #000000 at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#5B99EB
RGB	rgb(91, 153, 235)
HSL	hsl(214, 78%, 64%)
HSV	hsv(214, 61%, 92%)
CMYK	cmyk(61.3%, 34.9%, 0%, 7.8%)
CIE-LAB	lab(62.51, 4.64, -47.30)
CIE-LCH	lch(62.51, 47.53, 275.60°)
OKLab	oklab(67.77% -0.0334 -0.134)
OKLCH	oklch(67.77% 0.138 256)
XYZ	xyz(30.6956, 31.0019, 82.9475)
Luminance	0.3100 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B99EB #EBAD5B

analogous

#5BE1EB #5B99EB #655BEB

triadic

#5B99EB #EB5B99 #99EB5B

tetradic

#5B99EB #EB5BE1 #EBAD5B #5BEB65

square

#5B99EB #EB5BE1 #EBAD5B #5BEB65

split-complementary

#5B99EB #EB655B #E1EB5B

monochromatic

#165BB5 #2477E4 #5B99EB #92BBF2 #C8DDF8

Accessibility & contrast

On white

2.92

#5B99EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.20

#5B99EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5B99EB

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B99EB	#FFFFFF	#000000	##000000
##5B99EB	1.00	2.92	7.20	7.20
#FFFFFF	2.92	1.00	21.00	21.00
#000000	7.20	21.00	1.00	1.00
##000000	7.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#769FEE

Deuteranopia (green-blind)

#6291E9

Tritanopia (blue-blind)

#00ACB7

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #5b99eb;
/* rgb */ color: rgb(91, 153, 235);
/* oklch */ color: oklch(67.8% 0.138 256.0);

Tailwind

colors: {
  custom: {
    50: '#95b6f2',
    500: '#5b99eb',
    950: '#000000',
  },
}

SCSS

$custom: #5b99eb;
$custom-light: #95b6f2;
$custom-dark: #000000;

JSON

{
  "hex": "#5b99eb",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 235
  },
  "hsl": {
    "h": 214.167,
    "s": 78.261,
    "l": 63.922
  },
  "oklch": {
    "l": 0.67772,
    "c": 0.13812,
    "h": 256
  },
  "luminance": 0.31005
}

Semantic roles & 50–950 ramp

primary

#5B99EB

secondary

#EAD4B8

accent

#810BDB

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1117

muted

#7E8085

Preview Lab

Preview with #5B99EB

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

Preview Lab → · Contrast checker → · Palette generator →