#517BB7#517BB7

#517BB7 is a mid, moderate blue. Relative luminance 0.193; OKLCH L 57.9% C 0.104 H 257.4°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#517BB7
RGB	rgb(81, 123, 183)
HSL	hsl(215, 41%, 52%)
HSV	hsv(215, 56%, 72%)
CMYK	cmyk(55.7%, 32.8%, 0%, 28.2%)
CIE-LAB	lab(51.07, 3.35, -36.06)
CIE-LCH	lch(51.07, 36.22, 275.30°)
OKLab	oklab(57.89% -0.0228 -0.1017)
OKLCH	oklch(57.89% 0.104 257.4)
XYZ	xyz(19.0206, 19.3326, 47.5198)
Luminance	0.1933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BB7 #B78D51

analogous

#51AEB7 #517BB7 #5A51B7

triadic

#517BB7 #B7517B #7BB751

tetradic

#517BB7 #B751AE #B78D51 #51B75A

square

#517BB7 #B751AE #B78D51 #51B75A

split-complementary

#517BB7 #B75A51 #AEB751

monochromatic

#294264 #3B5E8F #517BB7 #7C9CC9 #A8BDDB

Accessibility & contrast

On white

4.31

#517BB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#517BB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BB7

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BB7	#FFFFFF	#000000	##000000
##517BB7	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FBA

Deuteranopia (green-blind)

#5675B6

Tritanopia (blue-blind)

#0B8891

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #517bb7;
/* rgb */ color: rgb(81, 123, 183);
/* oklch */ color: oklch(57.9% 0.104 257.4);

Tailwind

colors: {
  custom: {
    50: '#89a0cd',
    500: '#517bb7',
    950: '#000000',
  },
}

SCSS

$custom: #517bb7;
$custom-light: #89a0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#517bb7",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 183
  },
  "hsl": {
    "h": 215.294,
    "s": 41.463,
    "l": 51.765
  },
  "oklch": {
    "l": 0.57893,
    "c": 0.10421,
    "h": 257.4
  },
  "luminance": 0.19334
}

Semantic roles & 50–950 ramp

primary

#517BB7

secondary

#C8B69C

accent

#9F57D1

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #517BB7

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

Preview Lab → · Contrast checker → · Palette generator →