#515CB8#515CB8

#515CB8 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.4% C 0.144 H 275.0°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#515CB8
RGB	rgb(81, 92, 184)
HSL	hsl(234, 42%, 52%)
HSV	hsv(234, 56%, 72%)
CMYK	cmyk(56%, 50%, 0%, 27.8%)
CIE-LAB	lab(42.56, 22.93, -50.17)
CIE-LCH	lch(42.56, 55.16, 294.56°)
OKLab	oklab(51.36% 0.0126 -0.1433)
OKLCH	oklch(51.36% 0.144 275)
XYZ	xyz(15.8694, 12.8632, 46.9847)
Luminance	0.1286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515CB8 #B8AD51

analogous

#5190B8 #515CB8 #7A51B8

triadic

#515CB8 #B8515C #5CB851

tetradic

#515CB8 #B85190 #B8AD51 #51B87A

square

#515CB8 #B85190 #B8AD51 #51B87A

split-complementary

#515CB8 #B87A51 #90B851

monochromatic

#293065 #3B4491 #515CB8 #7C85CA #A8ADDB

Accessibility & contrast

On white

5.88

#515CB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#515CB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515CB8

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515CB8	#FFFFFF	#000000	##FFFFFF
##515CB8	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E69BB

Deuteranopia (green-blind)

#1E60B6

Tritanopia (blue-blind)

#187181

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #515cb8;
/* rgb */ color: rgb(81, 92, 184);
/* oklch */ color: oklch(51.4% 0.144 275.0);

Tailwind

colors: {
  custom: {
    50: '#8a8ace',
    500: '#515cb8',
    950: '#000000',
  },
}

SCSS

$custom: #515cb8;
$custom-light: #8a8ace;
$custom-dark: #000000;

JSON

{
  "hex": "#515cb8",
  "rgb": {
    "r": 81,
    "g": 92,
    "b": 184
  },
  "hsl": {
    "h": 233.592,
    "s": 42.041,
    "l": 51.961
  },
  "oklch": {
    "l": 0.5136,
    "c": 0.14384,
    "h": 275
  },
  "luminance": 0.12864
}

Semantic roles & 50–950 ramp

primary

#515CB8

secondary

#C9C49C

accent

#C556D2

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #515CB8

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

Preview Lab → · Contrast checker → · Palette generator →