#515CB4#515CB4

#515CB4 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.1% C 0.138 H 275.1°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#515CB4
RGB	rgb(81, 92, 180)
HSL	hsl(233, 40%, 51%)
HSV	hsv(233, 55%, 71%)
CMYK	cmyk(55%, 48.9%, 0%, 29.4%)
CIE-LAB	lab(42.30, 21.60, -48.24)
CIE-LCH	lch(42.30, 52.85, 294.12°)
OKLab	oklab(51.09% 0.0122 -0.1376)
OKLCH	oklch(51.09% 0.138 275.1)
XYZ	xyz(15.4561, 12.6979, 44.8076)
Luminance	0.1270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515CB4 #B4A951

analogous

#518DB4 #515CB4 #7751B4

triadic

#515CB4 #B4515C #5CB451

tetradic

#515CB4 #B4518D #B4A951 #51B477

square

#515CB4 #B4518D #B4A951 #51B477

split-complementary

#515CB4 #B47751 #8DB451

monochromatic

#2A3061 #3C458C #515CB4 #7C84C6 #A7ACD9

Accessibility & contrast

On white

5.93

#515CB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#515CB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515CB4

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515CB4	#FFFFFF	#000000	##FFFFFF
##515CB4	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3268B7

Deuteranopia (green-blind)

#2560B2

Tritanopia (blue-blind)

#1F707F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #515cb4;
/* rgb */ color: rgb(81, 92, 180);
/* oklch */ color: oklch(51.1% 0.138 275.1);

Tailwind

colors: {
  custom: {
    50: '#898acb',
    500: '#515cb4',
    950: '#000000',
  },
}

SCSS

$custom: #515cb4;
$custom-light: #898acb;
$custom-dark: #000000;

JSON

{
  "hex": "#515cb4",
  "rgb": {
    "r": 81,
    "g": 92,
    "b": 180
  },
  "hsl": {
    "h": 233.333,
    "s": 39.759,
    "l": 51.176
  },
  "oklch": {
    "l": 0.51088,
    "c": 0.13813,
    "h": 275.1
  },
  "luminance": 0.12699
}

Semantic roles & 50–950 ramp

primary

#515CB4

secondary

#C6C19B

accent

#C258D0

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515CB4

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

Preview Lab → · Contrast checker → · Palette generator →