#5151BA#5151BA

#5151BA is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.4% C 0.161 H 278.7°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#5151BA
RGB	rgb(81, 81, 186)
HSL	hsl(240, 43%, 52%)
HSV	hsv(240, 56%, 73%)
CMYK	cmyk(56.5%, 56.5%, 0%, 27.1%)
CIE-LAB	lab(39.88, 30.51, -55.66)
CIE-LCH	lch(39.88, 63.48, 298.73°)
OKLab	oklab(49.4% 0.0245 -0.1595)
OKLCH	oklch(49.4% 0.161 278.7)
XYZ	xyz(15.1959, 11.1783, 47.8017)
Luminance	0.1118 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151BA #BABA51

analogous

#5186BA #5151BA #8651BA

triadic

#5151BA #BA5151 #51BA51

tetradic

#5151BA #BA5186 #BABA51 #51BA86

square

#5151BA #BA5186 #BABA51 #51BA86

split-complementary

#5151BA #BA8651 #86BA51

monochromatic

#292968 #3A3A93 #5151BA #7D7DCB #A9A9DD

Accessibility & contrast

On white

6.49

#5151BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#5151BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151BA

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151BA	#FFFFFF	#000000	##FFFFFF
##5151BA	1.00	6.49	3.24	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BE

Deuteranopia (green-blind)

#005AB8

Tritanopia (blue-blind)

#18697D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #5151ba;
/* rgb */ color: rgb(81, 81, 186);
/* oklch */ color: oklch(49.4% 0.161 278.7);

Tailwind

colors: {
  custom: {
    50: '#8b82cf',
    500: '#5151ba',
    950: '#000000',
  },
}

SCSS

$custom: #5151ba;
$custom-light: #8b82cf;
$custom-dark: #000000;

JSON

{
  "hex": "#5151ba",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 186
  },
  "hsl": {
    "h": 240,
    "s": 43.21,
    "l": 52.353
  },
  "oklch": {
    "l": 0.49396,
    "c": 0.16139,
    "h": 278.7
  },
  "luminance": 0.11179
}

Semantic roles & 50–950 ramp

primary

#5151BA

secondary

#CACA9D

accent

#D355D3

background

#F9F7FC

surface

#F1EEF9

border

#CBC9D2

text

#0D0A14

muted

#7E7C82

Preview Lab

Preview with #5151BA

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

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