#5157CB#5157CB

#5157CB is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.8% C 0.177 H 276.1°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#5157CB
RGB	rgb(81, 87, 203)
HSL	hsl(237, 54%, 56%)
HSV	hsv(237, 60%, 80%)
CMYK	cmyk(60.1%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(42.58, 32.38, -61.18)
CIE-LCH	lch(42.58, 69.22, 297.89°)
OKLab	oklab(51.79% 0.0187 -0.1757)
OKLCH	oklch(51.79% 0.177 276.1)
XYZ	xyz(17.5775, 12.8762, 58.0474)
Luminance	0.1288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5157CB #CBC551

analogous

#5194CB #5157CB #8851CB

triadic

#5157CB #CB5157 #57CB51

tetradic

#5157CB #CB5194 #CBC551 #51CB88

square

#5157CB #CB5194 #CBC551 #51CB88

split-complementary

#5157CB #CB8851 #94CB51

monochromatic

#25297C #3339AC #5157CB #8084D9 #AFB2E7

Accessibility & contrast

On white

5.87

#5157CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#5157CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5157CB

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5157CB	#FFFFFF	#000000	##FFFFFF
##5157CB	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACF

Deuteranopia (green-blind)

#005FC9

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #5157cb;
/* rgb */ color: rgb(81, 87, 203);
/* oklch */ color: oklch(51.8% 0.177 276.1);

Tailwind

colors: {
  custom: {
    50: '#8d86dc',
    500: '#5157cb',
    950: '#000000',
  },
}

SCSS

$custom: #5157cb;
$custom-light: #8d86dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5157cb",
  "rgb": {
    "r": 81,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 237.049,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.51786,
    "c": 0.17669,
    "h": 276.1
  },
  "luminance": 0.12878
}

Semantic roles & 50–950 ramp

primary

#5157CB

secondary

#D5D3A3

accent

#D64ADD

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #5157CB

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

Preview Lab → · Contrast checker → · Palette generator →