#5191EE#5191EE

#5191EE is a light, vivid blue. Relative luminance 0.282; OKLCH L 65.8% C 0.154 H 257.8°. Best body text is #000000 at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#5191EE
RGB	rgb(81, 145, 238)
HSL	hsl(216, 82%, 63%)
HSV	hsv(216, 66%, 93%)
CMYK	cmyk(66%, 39.1%, 0%, 6.7%)
CIE-LAB	lab(60.04, 8.63, -52.89)
CIE-LCH	lch(60.04, 53.59, 279.27°)
OKLab	oklab(65.79% -0.0325 -0.1506)
OKLCH	oklch(65.79% 0.154 257.8)
XYZ	xyz(28.9458, 28.1703, 84.7843)
Luminance	0.2817 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5191EE #EEAE51

analogous

#51E0EE #5191EE #5F51EE

triadic

#5191EE #EE5191 #91EE51

tetradic

#5191EE #EE51E0 #EEAE51 #51EE5F

square

#5191EE #EE51E0 #EEAE51 #51EE5F

split-complementary

#5191EE #EE5F51 #E0EE51

monochromatic

#1153B3 #196EE9 #5191EE #89B4F3 #C1D7F9

Accessibility & contrast

On white

3.17

#5191EE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.63

#5191EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5191EE

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5191EE	#FFFFFF	#000000	##000000
##5191EE	1.00	3.17	6.63	6.63
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.63	21.00	1.00	1.00
##000000	6.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6799F2

Deuteranopia (green-blind)

#4F8AEC

Tritanopia (blue-blind)

#00A6B4

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #5191ee;
/* rgb */ color: rgb(81, 145, 238);
/* oklch */ color: oklch(65.8% 0.154 257.8);

Tailwind

colors: {
  custom: {
    50: '#91b0f4',
    500: '#5191ee',
    950: '#000000',
  },
}

SCSS

$custom: #5191ee;
$custom-light: #91b0f4;
$custom-dark: #000000;

JSON

{
  "hex": "#5191ee",
  "rgb": {
    "r": 81,
    "g": 145,
    "b": 238
  },
  "hsl": {
    "h": 215.541,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.65787,
    "c": 0.15408,
    "h": 257.8
  },
  "luminance": 0.28173
}

Semantic roles & 50–950 ramp

primary

#5191EE

secondary

#EAD3B1

accent

#8707DF

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #5191EE

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

Preview Lab → · Contrast checker → · Palette generator →