#515D8A#515D8A

#515D8A is a mid, moderate blue. Relative luminance 0.114; OKLCH L 48.8% C 0.074 H 272.0°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#515D8A
RGB	rgb(81, 93, 138)
HSL	hsl(227, 26%, 43%)
HSV	hsv(227, 41%, 54%)
CMYK	cmyk(41.3%, 32.6%, 0%, 45.9%)
CIE-LAB	lab(40.27, 7.56, -26.45)
CIE-LCH	lch(40.27, 27.51, 285.95°)
OKLab	oklab(48.78% 0.0026 -0.074)
OKLCH	oklch(48.78% 0.074 272)
XYZ	xyz(11.8937, 11.4125, 25.6160)
Luminance	0.1141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515D8A #8A7E51

analogous

#51798A #515D8A #61518A

triadic

#515D8A #8A515D #5D8A51

tetradic

#515D8A #8A5179 #8A7E51 #518A61

square

#515D8A #8A5179 #8A7E51 #518A61

split-complementary

#515D8A #8A6151 #798A51

monochromatic

#24293D #3A4363 #515D8A #6E7BAA #959EC1

Accessibility & contrast

On white

6.40

#515D8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#515D8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515D8A

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515D8A	#FFFFFF	#000000	##FFFFFF
##515D8A	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E618C

Deuteranopia (green-blind)

#495D89

Tritanopia (blue-blind)

#3F666D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #515d8a;
/* rgb */ color: rgb(81, 93, 138);
/* oklch */ color: oklch(48.8% 0.074 272.0);

Tailwind

colors: {
  custom: {
    50: '#848aac',
    500: '#515d8a',
    950: '#000000',
  },
}

SCSS

$custom: #515d8a;
$custom-light: #848aac;
$custom-dark: #000000;

JSON

{
  "hex": "#515d8a",
  "rgb": {
    "r": 81,
    "g": 93,
    "b": 138
  },
  "hsl": {
    "h": 227.368,
    "s": 26.027,
    "l": 42.941
  },
  "oklch": {
    "l": 0.48775,
    "c": 0.07403,
    "h": 272
  },
  "luminance": 0.11413
}

Semantic roles & 50–950 ramp

primary

#515D8A

secondary

#AEA689

accent

#AF65C2

background

#F8F8FA

surface

#EFF0F4

border

#CACBCE

text

#0B0B10

muted

#7C7C7F

Preview Lab

Preview with #515D8A

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

Preview Lab → · Contrast checker → · Palette generator →