#15315B#15315B

#15315B is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.6% C 0.083 H 258.4°. Best body text is #FFFFFF at 12.95:1 contrast (WCAG AA passes).

Color values

HEX	#15315B
RGB	rgb(21, 49, 91)
HSL	hsl(216, 63%, 22%)
HSV	hsv(216, 77%, 36%)
CMYK	cmyk(76.9%, 46.2%, 0%, 64.3%)
CIE-LAB	lab(20.48, 5.78, -28.29)
CIE-LCH	lch(20.48, 28.88, 281.55°)
OKLab	oklab(31.62% -0.0165 -0.0809)
OKLCH	oklch(31.62% 0.083 258.4)
XYZ	xyz(3.2952, 3.1110, 10.3223)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15315B #5B3F15

analogous

#15545B #15315B #1C155B

triadic

#15315B #5B1531 #315B15

tetradic

#15315B #5B1554 #5B3F15 #155B1C

square

#15315B #5B1554 #5B3F15 #155B1C

split-complementary

#15315B #5B1C15 #545B15

monochromatic

#060D19 #0A1629 #15315B #204C8D #2C67BE

Accessibility & contrast

On white

12.95

#15315B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#15315B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15315B

12.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15315B	#FFFFFF	#000000	##FFFFFF
##15315B	1.00	12.95	1.62	12.95
#FFFFFF	12.95	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D355D

Deuteranopia (green-blind)

#102E5A

Tritanopia (blue-blind)

#003B41

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #15315b;
/* rgb */ color: rgb(21, 49, 91);
/* oklch */ color: oklch(31.6% 0.083 258.4);

Tailwind

colors: {
  custom: {
    50: '#5d688a',
    500: '#15315b',
    950: '#000000',
  },
}

SCSS

$custom: #15315b;
$custom-light: #5d688a;
$custom-dark: #000000;

JSON

{
  "hex": "#15315b",
  "rgb": {
    "r": 21,
    "g": 49,
    "b": 91
  },
  "hsl": {
    "h": 216,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.3162,
    "c": 0.08255,
    "h": 258.4
  },
  "luminance": 0.03111
}

Semantic roles & 50–950 ramp

primary

#15315B

secondary

#926F39

accent

#A442E6

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #15315B

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

Preview Lab → · Contrast checker → · Palette generator →