#515EB5#515EB5

#515EB5 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.6% C 0.137 H 274.2°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#515EB5
RGB	rgb(81, 94, 181)
HSL	hsl(232, 40%, 51%)
HSV	hsv(232, 55%, 71%)
CMYK	cmyk(55.2%, 48.1%, 0%, 29%)
CIE-LAB	lab(42.90, 20.67, -47.87)
CIE-LCH	lch(42.90, 52.14, 293.35°)
OKLab	oklab(51.56% 0.01 -0.1365)
OKLCH	oklch(51.56% 0.137 274.2)
XYZ	xyz(15.7338, 13.0898, 45.4046)
Luminance	0.1309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515EB5 #B5A851

analogous

#5190B5 #515EB5 #7651B5

triadic

#515EB5 #B5515E #5EB551

tetradic

#515EB5 #B55190 #B5A851 #51B576

square

#515EB5 #B55190 #B5A851 #51B576

split-complementary

#515EB5 #B57651 #90B551

monochromatic

#2A3162 #3C468D #515EB5 #7C86C7 #A7ADDA

Accessibility & contrast

On white

5.80

#515EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#515EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515EB5

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515EB5	#FFFFFF	#000000	##FFFFFF
##515EB5	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356AB8

Deuteranopia (green-blind)

#2861B3

Tritanopia (blue-blind)

#1D7181

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #515eb5;
/* rgb */ color: rgb(81, 94, 181);
/* oklch */ color: oklch(51.6% 0.137 274.2);

Tailwind

colors: {
  custom: {
    50: '#898bcc',
    500: '#515eb5',
    950: '#000000',
  },
}

SCSS

$custom: #515eb5;
$custom-light: #898bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#515eb5",
  "rgb": {
    "r": 81,
    "g": 94,
    "b": 181
  },
  "hsl": {
    "h": 232.2,
    "s": 40.323,
    "l": 51.373
  },
  "oklch": {
    "l": 0.51558,
    "c": 0.13687,
    "h": 274.2
  },
  "luminance": 0.13091
}

Semantic roles & 50–950 ramp

primary

#515EB5

secondary

#C7C19B

accent

#C158D0

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C13

muted

#7D7D82

Preview Lab

Preview with #515EB5

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

Preview Lab → · Contrast checker → · Palette generator →