#515CB1#515CB1

#515CB1 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 50.9% C 0.134 H 275.1°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#515CB1
RGB	rgb(81, 92, 177)
HSL	hsl(233, 38%, 51%)
HSV	hsv(233, 54%, 69%)
CMYK	cmyk(54.2%, 48%, 0%, 30.6%)
CIE-LAB	lab(42.12, 20.61, -46.77)
CIE-LCH	lch(42.12, 51.11, 293.78°)
OKLab	oklab(50.89% 0.0118 -0.1333)
OKLCH	oklch(50.89% 0.134 275.1)
XYZ	xyz(15.1538, 12.5769, 43.2155)
Luminance	0.1258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515CB1 #B1A651

analogous

#518CB1 #515CB1 #7651B1

triadic

#515CB1 #B1515C #5CB151

tetradic

#515CB1 #B1518C #B1A651 #51B176

square

#515CB1 #B1518C #B1A651 #51B176

split-complementary

#515CB1 #B17651 #8CB151

monochromatic

#2A305E #3D4688 #515CB1 #7B84C4 #A6ABD7

Accessibility & contrast

On white

5.97

#515CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#515CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515CB1

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515CB1	#FFFFFF	#000000	##FFFFFF
##515CB1	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3568B4

Deuteranopia (green-blind)

#2960AF

Tritanopia (blue-blind)

#236F7E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #515cb1;
/* rgb */ color: rgb(81, 92, 177);
/* oklch */ color: oklch(50.9% 0.134 275.1);

Tailwind

colors: {
  custom: {
    50: '#898ac9',
    500: '#515cb1',
    950: '#000000',
  },
}

SCSS

$custom: #515cb1;
$custom-light: #898ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#515cb1",
  "rgb": {
    "r": 81,
    "g": 92,
    "b": 177
  },
  "hsl": {
    "h": 233.125,
    "s": 38.095,
    "l": 50.588
  },
  "oklch": {
    "l": 0.50888,
    "c": 0.13381,
    "h": 275.1
  },
  "luminance": 0.12578
}

Semantic roles & 50–950 ramp

primary

#515CB1

secondary

#C4BF9A

accent

#C15ACE

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #515CB1

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

Preview Lab → · Contrast checker → · Palette generator →