#517BB6#517BB6

#517BB6 is a mid, moderate blue. Relative luminance 0.193; OKLCH L 57.8% C 0.103 H 257.0°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#517BB6
RGB	rgb(81, 123, 182)
HSL	hsl(215, 41%, 52%)
HSV	hsv(215, 55%, 71%)
CMYK	cmyk(55.5%, 32.4%, 0%, 28.6%)
CIE-LAB	lab(51.03, 3.02, -35.56)
CIE-LCH	lch(51.03, 35.69, 274.86°)
OKLab	oklab(57.84% -0.0231 -0.1002)
OKLCH	oklch(57.84% 0.103 257)
XYZ	xyz(18.9169, 19.2911, 46.9736)
Luminance	0.1929 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BB6 #B68C51

analogous

#51AEB6 #517BB6 #5A51B6

triadic

#517BB6 #B6517B #7BB651

tetradic

#517BB6 #B651AE #B68C51 #51B65A

square

#517BB6 #B651AE #B68C51 #51B65A

split-complementary

#517BB6 #B65A51 #AEB651

monochromatic

#2A4163 #3C5E8E #517BB6 #7C9CC8 #A7BCDA

Accessibility & contrast

On white

4.32

#517BB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#517BB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BB6

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BB6	#FFFFFF	#000000	##000000
##517BB6	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FB9

Deuteranopia (green-blind)

#5675B5

Tritanopia (blue-blind)

#0E8890

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #517bb6;
/* rgb */ color: rgb(81, 123, 182);
/* oklch */ color: oklch(57.8% 0.103 257.0);

Tailwind

colors: {
  custom: {
    50: '#89a0cc',
    500: '#517bb6',
    950: '#000000',
  },
}

SCSS

$custom: #517bb6;
$custom-light: #89a0cc;
$custom-dark: #000000;

JSON

{
  "hex": "#517bb6",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 182
  },
  "hsl": {
    "h": 215.05,
    "s": 40.891,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57839,
    "c": 0.10286,
    "h": 257
  },
  "luminance": 0.19293
}

Semantic roles & 50–950 ramp

primary

#517BB6

secondary

#C8B59B

accent

#9E57D1

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #517BB6

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

Preview Lab → · Contrast checker → · Palette generator →