#517BBC#517BBC

#517BBC is a mid, moderate blue. Relative luminance 0.195; OKLCH L 58.2% C 0.111 H 258.8°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#517BBC
RGB	rgb(81, 123, 188)
HSL	hsl(216, 44%, 53%)
HSV	hsv(216, 57%, 74%)
CMYK	cmyk(56.9%, 34.6%, 0%, 26.3%)
CIE-LAB	lab(51.32, 4.98, -38.55)
CIE-LCH	lch(51.32, 38.87, 277.37°)
OKLab	oklab(58.16% -0.0215 -0.1089)
OKLCH	oklch(58.16% 0.111 258.8)
XYZ	xyz(19.5502, 19.5445, 50.3094)
Luminance	0.1955 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BBC #BC9251

analogous

#51B0BC #517BBC #5D51BC

triadic

#517BBC #BC517B #7BBC51

tetradic

#517BBC #BC51B0 #BC9251 #51BC5D

square

#517BBC #BC51B0 #BC9251 #51BC5D

split-complementary

#517BBC #BC5D51 #B0BC51

monochromatic

#29426A #3A5E96 #517BBC #7D9DCD #A9BEDE

Accessibility & contrast

On white

4.28

#517BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#517BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BBC

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BBC	#FFFFFF	#000000	##000000
##517BBC	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6080BF

Deuteranopia (green-blind)

#5376BB

Tritanopia (blue-blind)

#008993

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #517bbc;
/* rgb */ color: rgb(81, 123, 188);
/* oklch */ color: oklch(58.2% 0.111 258.8);

Tailwind

colors: {
  custom: {
    50: '#8aa0d0',
    500: '#517bbc',
    950: '#000000',
  },
}

SCSS

$custom: #517bbc;
$custom-light: #8aa0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#517bbc",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 188
  },
  "hsl": {
    "h": 216.449,
    "s": 44.398,
    "l": 52.745
  },
  "oklch": {
    "l": 0.58163,
    "c": 0.11103,
    "h": 258.8
  },
  "luminance": 0.19546
}

Semantic roles & 50–950 ramp

primary

#517BBC

secondary

#CCB99D

accent

#A254D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #517BBC

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

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