#5175B3#5175B3

#5175B3 is a mid, moderate blue. Relative luminance 0.177; OKLCH L 56.3% C 0.105 H 260.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#5175B3
RGB	rgb(81, 117, 179)
HSL	hsl(218, 39%, 51%)
HSV	hsv(218, 55%, 70%)
CMYK	cmyk(54.7%, 34.6%, 0%, 29.8%)
CIE-LAB	lab(49.16, 5.67, -36.76)
CIE-LCH	lch(49.16, 37.19, 278.77°)
OKLab	oklab(56.34% -0.0169 -0.1038)
OKLCH	oklch(56.34% 0.105 260.7)
XYZ	xyz(17.8885, 17.7252, 45.1177)
Luminance	0.1773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5175B3 #B38F51

analogous

#51A6B3 #5175B3 #5E51B3

triadic

#5175B3 #B35175 #75B351

tetradic

#5175B3 #B351A6 #B38F51 #51B35E

square

#5175B3 #B351A6 #B38F51 #51B35E

split-complementary

#5175B3 #B35E51 #A6B351

monochromatic

#2A3E60 #3C598A #5175B3 #7C97C6 #A6B9D8

Accessibility & contrast

On white

4.62

#5175B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#5175B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5175B3

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5175B3	#FFFFFF	#000000	##FFFFFF
##5175B3	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7AB6

Deuteranopia (green-blind)

#5071B2

Tritanopia (blue-blind)

#18838C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5175b3;
/* rgb */ color: rgb(81, 117, 179);
/* oklch */ color: oklch(56.3% 0.105 260.7);

Tailwind

colors: {
  custom: {
    50: '#899cca',
    500: '#5175b3',
    950: '#000000',
  },
}

SCSS

$custom: #5175b3;
$custom-light: #899cca;
$custom-dark: #000000;

JSON

{
  "hex": "#5175b3",
  "rgb": {
    "r": 81,
    "g": 117,
    "b": 179
  },
  "hsl": {
    "h": 217.959,
    "s": 39.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.56337,
    "c": 0.10513,
    "h": 260.7
  },
  "luminance": 0.17727
}

Semantic roles & 50–950 ramp

primary

#5175B3

secondary

#C6B69A

accent

#A459CF

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #5175B3

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

Preview Lab → · Contrast checker → · Palette generator →