#5191BB#5191BB

#5191BB is a light, moderate cyan. Relative luminance 0.256; OKLCH L 63.1% C 0.091 H 239.2°. Best body text is #000000 at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#5191BB
RGB	rgb(81, 145, 187)
HSL	hsl(204, 44%, 53%)
HSV	hsv(204, 57%, 73%)
CMYK	cmyk(56.7%, 22.5%, 0%, 26.7%)
CIE-LAB	lab(57.64, -8.19, -28.11)
CIE-LCH	lch(57.64, 29.27, 253.76°)
OKLab	oklab(63.12% -0.0468 -0.0786)
OKLCH	oklch(63.12% 0.091 239.2)
XYZ	xyz(22.4851, 25.5860, 50.7577)
Luminance	0.2559 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5191BB #BB7B51

analogous

#51BBB0 #5191BB #515CBB

triadic

#5191BB #BB5191 #91BB51

tetradic

#5191BB #B051BB #BB7B51 #5CBB51

square

#5191BB #B051BB #BB7B51 #5CBB51

split-complementary

#5191BB #BB515C #BBB051

monochromatic

#294F69 #3A7195 #5191BB #7DADCC #A9C9DD

Accessibility & contrast

On white

3.43

#5191BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.12

#5191BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5191BB

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5191BB	#FFFFFF	#000000	##000000
##5191BB	1.00	3.43	6.12	6.12
#FFFFFF	3.43	1.00	21.00	21.00
#000000	6.12	21.00	1.00	1.00
##000000	6.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E91BD

Deuteranopia (green-blind)

#7086BA

Tritanopia (blue-blind)

#009C9F

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #5191bb;
/* rgb */ color: rgb(81, 145, 187);
/* oklch */ color: oklch(63.1% 0.091 239.2);

Tailwind

colors: {
  custom: {
    50: '#8ab1cf',
    500: '#5191bb',
    950: '#000000',
  },
}

SCSS

$custom: #5191bb;
$custom-light: #8ab1cf;
$custom-dark: #000000;

JSON

{
  "hex": "#5191bb",
  "rgb": {
    "r": 81,
    "g": 145,
    "b": 187
  },
  "hsl": {
    "h": 203.774,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.63118,
    "c": 0.09148,
    "h": 239.2
  },
  "luminance": 0.25588
}

Semantic roles & 50–950 ramp

primary

#5191BB

secondary

#CBAF9D

accent

#8754D4

background

#F8FAFC

surface

#F0F5F9

border

#CBCFD2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #5191BB

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

Preview Lab → · Contrast checker → · Palette generator →