#515B8A#515B8A

#515B8A is a mid, moderate blue. Relative luminance 0.111; OKLCH L 48.3% C 0.077 H 274.0°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#515B8A
RGB	rgb(81, 91, 138)
HSL	hsl(229, 26%, 43%)
HSV	hsv(229, 41%, 54%)
CMYK	cmyk(41.3%, 34.1%, 0%, 45.9%)
CIE-LAB	lab(39.69, 8.82, -27.35)
CIE-LCH	lch(39.69, 28.74, 287.87°)
OKLab	oklab(48.33% 0.0054 -0.0766)
OKLCH	oklch(48.33% 0.077 274)
XYZ	xyz(11.7205, 11.0659, 25.5582)
Luminance	0.1107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515B8A #8A8051

analogous

#51778A #515B8A #64518A

triadic

#515B8A #8A515B #5B8A51

tetradic

#515B8A #8A5177 #8A8051 #518A64

square

#515B8A #8A5177 #8A8051 #518A64

split-complementary

#515B8A #8A6451 #778A51

monochromatic

#24283D #3A4263 #515B8A #6E79AA #959CC1

Accessibility & contrast

On white

6.54

#515B8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#515B8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515B8A

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515B8A	#FFFFFF	#000000	##FFFFFF
##515B8A	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B608C

Deuteranopia (green-blind)

#475B89

Tritanopia (blue-blind)

#3F646C

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #515b8a;
/* rgb */ color: rgb(81, 91, 138);
/* oklch */ color: oklch(48.3% 0.077 274.0);

Tailwind

colors: {
  custom: {
    50: '#8489ac',
    500: '#515b8a',
    950: '#000000',
  },
}

SCSS

$custom: #515b8a;
$custom-light: #8489ac;
$custom-dark: #000000;

JSON

{
  "hex": "#515b8a",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 138
  },
  "hsl": {
    "h": 229.474,
    "s": 26.027,
    "l": 42.941
  },
  "oklch": {
    "l": 0.4833,
    "c": 0.07677,
    "h": 274
  },
  "luminance": 0.11066
}

Semantic roles & 50–950 ramp

primary

#515B8A

secondary

#AEA789

accent

#B265C2

background

#F8F8FA

surface

#EFF0F4

border

#CACBCE

text

#0B0B10

muted

#7C7C7F

Preview Lab

Preview with #515B8A

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

Preview Lab → · Contrast checker → · Palette generator →