#517BB5#517BB5

#517BB5 is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.8% C 0.102 H 256.7°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#517BB5
RGB	rgb(81, 123, 181)
HSL	hsl(215, 40%, 51%)
HSV	hsv(215, 55%, 71%)
CMYK	cmyk(55.2%, 32%, 0%, 29%)
CIE-LAB	lab(50.98, 2.70, -35.06)
CIE-LCH	lch(50.98, 35.16, 274.40°)
OKLab	oklab(57.79% -0.0234 -0.0988)
OKLCH	oklch(57.79% 0.102 256.7)
XYZ	xyz(18.8139, 19.2499, 46.4313)
Luminance	0.1925 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517BB5 #B58B51

analogous

#51ADB5 #517BB5 #5951B5

triadic

#517BB5 #B5517B #7BB551

tetradic

#517BB5 #B551AD #B58B51 #51B559

square

#517BB5 #B551AD #B58B51 #51B559

split-complementary

#517BB5 #B55951 #ADB551

monochromatic

#2A4162 #3C5E8D #517BB5 #7C9CC7 #A7BCDA

Accessibility & contrast

On white

4.33

#517BB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#517BB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517BB5

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517BB5	#FFFFFF	#000000	##000000
##517BB5	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647FB7

Deuteranopia (green-blind)

#5775B4

Tritanopia (blue-blind)

#118890

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #517bb5;
/* rgb */ color: rgb(81, 123, 181);
/* oklch */ color: oklch(57.8% 0.102 256.7);

Tailwind

colors: {
  custom: {
    50: '#89a0cb',
    500: '#517bb5',
    950: '#000000',
  },
}

SCSS

$custom: #517bb5;
$custom-light: #89a0cb;
$custom-dark: #000000;

JSON

{
  "hex": "#517bb5",
  "rgb": {
    "r": 81,
    "g": 123,
    "b": 181
  },
  "hsl": {
    "h": 214.8,
    "s": 40.323,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57786,
    "c": 0.1015,
    "h": 256.7
  },
  "luminance": 0.19251
}

Semantic roles & 50–950 ramp

primary

#517BB5

secondary

#C7B49B

accent

#9E58D0

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #517BB5

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

Preview Lab → · Contrast checker → · Palette generator →