#515BC5#515BC5

#515BC5 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.1% C 0.163 H 275.1°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#515BC5
RGB	rgb(81, 91, 197)
HSL	hsl(235, 50%, 55%)
HSV	hsv(235, 59%, 77%)
CMYK	cmyk(58.9%, 53.8%, 0%, 22.7%)
CIE-LAB	lab(43.15, 27.89, -56.77)
CIE-LCH	lch(43.15, 63.25, 296.16°)
OKLab	oklab(52.08% 0.0146 -0.1627)
OKLCH	oklch(52.08% 0.163 275.1)
XYZ	xyz(17.2092, 13.2614, 54.4653)
Luminance	0.1326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515BC5 #C5BB51

analogous

#5195C5 #515BC5 #8151C5

triadic

#515BC5 #C5515B #5BC551

tetradic

#515BC5 #C55195 #C5BB51 #51C581

square

#515BC5 #C55195 #C5BB51 #51C581

split-complementary

#515BC5 #C58151 #95C551

monochromatic

#272E75 #3640A3 #515BC5 #7F86D4 #ADB2E4

Accessibility & contrast

On white

5.75

#515BC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#515BC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515BC5

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515BC5	#FFFFFF	#000000	##FFFFFF
##515BC5	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#166BC9

Deuteranopia (green-blind)

#0061C3

Tritanopia (blue-blind)

#007487

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #515bc5;
/* rgb */ color: rgb(81, 91, 197);
/* oklch */ color: oklch(52.1% 0.163 275.1);

Tailwind

colors: {
  custom: {
    50: '#8c89d7',
    500: '#515bc5',
    950: '#000000',
  },
}

SCSS

$custom: #515bc5;
$custom-light: #8c89d7;
$custom-dark: #000000;

JSON

{
  "hex": "#515bc5",
  "rgb": {
    "r": 81,
    "g": 91,
    "b": 197
  },
  "hsl": {
    "h": 234.828,
    "s": 50,
    "l": 54.51
  },
  "oklch": {
    "l": 0.52084,
    "c": 0.16337,
    "h": 275.1
  },
  "luminance": 0.13263
}

Semantic roles & 50–950 ramp

primary

#515BC5

secondary

#D1CDA0

accent

#CE4EDA

background

#F9F8FD

surface

#F1F0FA

border

#CBCBD3

text

#0D0B14

muted

#7E7C83

Preview Lab

Preview with #515BC5

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

Preview Lab → · Contrast checker → · Palette generator →