#5170DB#5170DB

#5170DB is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.7% C 0.167 H 268.6°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#5170DB
RGB	rgb(81, 112, 219)
HSL	hsl(227, 66%, 59%)
HSV	hsv(227, 63%, 86%)
CMYK	cmyk(63%, 48.9%, 0%, 14.1%)
CIE-LAB	lab(50.04, 22.21, -58.27)
CIE-LCH	lch(50.04, 62.36, 290.86°)
OKLab	oklab(57.74% -0.0041 -0.1669)
OKLCH	oklch(57.74% 0.167 268.6)
XYZ	xyz(21.9693, 18.4502, 69.4076)
Luminance	0.1845 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5170DB #DBBC51

analogous

#51B5DB #5170DB #7751DB

triadic

#5170DB #DB5170 #70DB51

tetradic

#5170DB #DB51B5 #DBBC51 #51DB77

square

#5170DB #DB51B5 #DBBC51 #51DB77

split-complementary

#5170DB #DB7751 #B5DB51

monochromatic

#1E3993 #294CC6 #5170DB #849AE5 #B6C3F0

Accessibility & contrast

On white

4.48

#5170DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#5170DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5170DB

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5170DB	#FFFFFF	#000000	##000000
##5170DB	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#377EDF

Deuteranopia (green-blind)

#1671D9

Tritanopia (blue-blind)

#00899B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #5170db;
/* rgb */ color: rgb(81, 112, 219);
/* oklch */ color: oklch(57.7% 0.167 268.6);

Tailwind

colors: {
  custom: {
    50: '#8f98e7',
    500: '#5170db',
    950: '#000000',
  },
}

SCSS

$custom: #5170db;
$custom-light: #8f98e7;
$custom-dark: #000000;

JSON

{
  "hex": "#5170db",
  "rgb": {
    "r": 81,
    "g": 112,
    "b": 219
  },
  "hsl": {
    "h": 226.522,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.5774,
    "c": 0.16691,
    "h": 268.6
  },
  "luminance": 0.18452
}

Semantic roles & 50–950 ramp

primary

#5170DB

secondary

#DFD3A9

accent

#C33FE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #5170DB

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

Preview Lab → · Contrast checker → · Palette generator →