#5751BB#5751BB

#5751BB is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.9% C 0.162 H 281.3°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#5751BB
RGB	rgb(87, 81, 187)
HSL	hsl(243, 44%, 53%)
HSV	hsv(243, 57%, 73%)
CMYK	cmyk(53.5%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(40.41, 32.02, -55.37)
CIE-LCH	lch(40.41, 63.96, 300.04°)
OKLab	oklab(49.93% 0.0318 -0.1585)
OKLCH	oklch(49.93% 0.162 281.3)
XYZ	xyz(15.8398, 11.4980, 48.3888)
Luminance	0.1150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5751BB #B5BB51

analogous

#5180BB #5751BB #8C51BB

triadic

#5751BB #BB5751 #51BB57

tetradic

#5751BB #BB5180 #B5BB51 #51BB8C

square

#5751BB #BB5180 #B5BB51 #51BB8C

split-complementary

#5751BB #BB8C51 #80BB51

monochromatic

#2D2969 #3F3A95 #5751BB #817DCC #ACA9DD

Accessibility & contrast

On white

6.36

#5751BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#5751BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5751BB

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5751BB	#FFFFFF	#000000	##FFFFFF
##5751BB	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#005BB9

Tritanopia (blue-blind)

#2B697E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #5751bb;
/* rgb */ color: rgb(87, 81, 187);
/* oklch */ color: oklch(49.9% 0.162 281.3);

Tailwind

colors: {
  custom: {
    50: '#8e82d0',
    500: '#5751bb',
    950: '#000000',
  },
}

SCSS

$custom: #5751bb;
$custom-light: #8e82d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5751bb",
  "rgb": {
    "r": 87,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 243.396,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.49926,
    "c": 0.16166,
    "h": 281.3
  },
  "luminance": 0.11499
}

Semantic roles & 50–950 ramp

primary

#5751BB

secondary

#C8CB9D

accent

#D454CC

background

#F9F7FC

surface

#F1EEF9

border

#CBC9D2

text

#0D0A14

muted

#7E7C82

Preview Lab

Preview with #5751BB

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

Preview Lab → · Contrast checker → · Palette generator →