#5157DB#5157DB

#5157DB is a mid, vivid blue. Relative luminance 0.137; OKLCH L 53.0% C 0.198 H 275.4°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#5157DB
RGB	rgb(81, 87, 219)
HSL	hsl(237, 66%, 59%)
HSV	hsv(237, 63%, 86%)
CMYK	cmyk(63%, 60.3%, 0%, 14.1%)
CIE-LAB	lab(43.77, 37.69, -68.42)
CIE-LCH	lch(43.77, 78.11, 298.85°)
OKLab	oklab(53.04% 0.0185 -0.197)
OKLCH	oklch(53.04% 0.198 275.4)
XYZ	xyz(19.5835, 13.6786, 68.6123)
Luminance	0.1368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5157DB #DBD551

analogous

#519CDB #5157DB #9051DB

triadic

#5157DB #DB5157 #57DB51

tetradic

#5157DB #DB519C #DBD551 #51DB90

square

#5157DB #DB519C #DBD551 #51DB90

split-complementary

#5157DB #DB9051 #9CDB51

monochromatic

#1E2493 #2930C6 #5157DB #8488E5 #B6B9F0

Accessibility & contrast

On white

5.62

#5157DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#5157DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5157DB

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5157DB	#FFFFFF	#000000	##FFFFFF
##5157DB	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006EDF

Deuteranopia (green-blind)

#0061D8

Tritanopia (blue-blind)

#007891

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #5157db;
/* rgb */ color: rgb(81, 87, 219);
/* oklch */ color: oklch(53.0% 0.198 275.4);

Tailwind

colors: {
  custom: {
    50: '#9086e7',
    500: '#5157db',
    950: '#000000',
  },
}

SCSS

$custom: #5157db;
$custom-light: #9086e7;
$custom-dark: #000000;

JSON

{
  "hex": "#5157db",
  "rgb": {
    "r": 81,
    "g": 87,
    "b": 219
  },
  "hsl": {
    "h": 237.391,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.53043,
    "c": 0.19786,
    "h": 275.4
  },
  "luminance": 0.1368
}

Semantic roles & 50–950 ramp

primary

#5157DB

secondary

#DFDDA9

accent

#E13FE9

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #5157DB

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

Preview Lab → · Contrast checker → · Palette generator →