#517FE8#517FE8

#517FE8 is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.6% C 0.166 H 264.3°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#517FE8
RGB	rgb(81, 127, 232)
HSL	hsl(222, 77%, 61%)
HSV	hsv(222, 65%, 91%)
CMYK	cmyk(65.1%, 45.3%, 0%, 9%)
CIE-LAB	lab(54.82, 17.42, -57.90)
CIE-LCH	lch(54.82, 60.47, 286.75°)
OKLab	oklab(61.64% -0.0165 -0.1656)
OKLCH	oklch(61.64% 0.166 264.3)
XYZ	xyz(25.5431, 22.7518, 79.3737)
Luminance	0.2275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517FE8 #E8BA51

analogous

#51CBE8 #517FE8 #6F51E8

triadic

#517FE8 #E8517F #7FE851

tetradic

#517FE8 #E851CB #E8BA51 #51E86F

square

#517FE8 #E851CB #E8BA51 #51E86F

split-complementary

#517FE8 #E86F51 #CBE851

monochromatic

#1643A8 #1D58DE #517FE8 #87A7EF #BDCFF6

Accessibility & contrast

On white

3.78

#517FE8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#517FE8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517FE8

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517FE8	#FFFFFF	#000000	##000000
##517FE8	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B8BEC

Deuteranopia (green-blind)

#2F7DE6

Tritanopia (blue-blind)

#0097A8

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #517fe8;
/* rgb */ color: rgb(81, 127, 232);
/* oklch */ color: oklch(61.6% 0.166 264.3);

Tailwind

colors: {
  custom: {
    50: '#90a3f0',
    500: '#517fe8',
    950: '#000000',
  },
}

SCSS

$custom: #517fe8;
$custom-light: #90a3f0;
$custom-dark: #000000;

JSON

{
  "hex": "#517fe8",
  "rgb": {
    "r": 81,
    "g": 127,
    "b": 232
  },
  "hsl": {
    "h": 221.722,
    "s": 76.65,
    "l": 61.373
  },
  "oklch": {
    "l": 0.61643,
    "c": 0.16641,
    "h": 264.3
  },
  "luminance": 0.22754
}

Semantic roles & 50–950 ramp

primary

#517FE8

secondary

#E7D5AE

accent

#9B0DD9

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #517FE8

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

Preview Lab → · Contrast checker → · Palette generator →