#5153BB#5153BB

#5153BB is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.8% C 0.160 H 278.0°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#5153BB
RGB	rgb(81, 83, 187)
HSL	hsl(239, 44%, 53%)
HSV	hsv(239, 57%, 73%)
CMYK	cmyk(56.7%, 55.6%, 0%, 26.7%)
CIE-LAB	lab(40.45, 29.59, -55.33)
CIE-LCH	lch(40.45, 62.74, 298.14°)
OKLab	oklab(49.84% 0.0224 -0.1585)
OKLCH	oklch(49.84% 0.16 278)
XYZ	xyz(15.4534, 11.5226, 48.4138)
Luminance	0.1152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5153BB #BBB951

analogous

#5188BB #5153BB #8451BB

triadic

#5153BB #BB5153 #53BB51

tetradic

#5153BB #BB5188 #BBB951 #51BB84

square

#5153BB #BB5188 #BBB951 #51BB84

split-complementary

#5153BB #BB8451 #88BB51

monochromatic

#292A69 #3A3C95 #5153BB #7D7ECC #A9AADD

Accessibility & contrast

On white

6.35

#5153BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#5153BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5153BB

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5153BB	#FFFFFF	#000000	##FFFFFF
##5153BB	1.00	6.35	3.30	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0664BF

Deuteranopia (green-blind)

#005BB9

Tritanopia (blue-blind)

#166B7F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #5153bb;
/* rgb */ color: rgb(81, 83, 187);
/* oklch */ color: oklch(49.8% 0.160 278.0);

Tailwind

colors: {
  custom: {
    50: '#8b83d0',
    500: '#5153bb',
    950: '#000000',
  },
}

SCSS

$custom: #5153bb;
$custom-light: #8b83d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5153bb",
  "rgb": {
    "r": 81,
    "g": 83,
    "b": 187
  },
  "hsl": {
    "h": 238.868,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.49841,
    "c": 0.1601,
    "h": 278
  },
  "luminance": 0.11524
}

Semantic roles & 50–950 ramp

primary

#5153BB

secondary

#CBCA9D

accent

#D154D4

background

#F9F8FC

surface

#F1EFF9

border

#CBCAD2

text

#0D0A14

muted

#7E7C82

Preview Lab

Preview with #5153BB

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

Preview Lab → · Contrast checker → · Palette generator →