#15317B#15317B

#15317B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.3% C 0.131 H 264.6°. Best body text is #FFFFFF at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#15317B
RGB	rgb(21, 49, 123)
HSL	hsl(224, 71%, 28%)
HSV	hsv(224, 83%, 48%)
CMYK	cmyk(82.9%, 60.2%, 0%, 51.8%)
CIE-LAB	lab(22.95, 19.23, -45.01)
CIE-LCH	lch(22.95, 48.94, 293.14°)
OKLab	oklab(34.28% -0.0123 -0.13)
OKLCH	oklch(34.28% 0.131 264.6)
XYZ	xyz(4.9815, 3.7855, 19.2032)
Luminance	0.0379 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15317B #7B5F15

analogous

#15647B #15317B #2C157B

triadic

#15317B #7B1531 #317B15

tetradic

#15317B #7B1564 #7B5F15 #157B2C

square

#15317B #7B1564 #7B5F15 #157B2C

split-complementary

#15317B #7B2C15 #647B15

monochromatic

#040A1A #0C1C47 #15317B #1E46AF #2F5EDB

Accessibility & contrast

On white

11.95

#15317B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#15317B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15317B

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15317B	#FFFFFF	#000000	##FFFFFF
##15317B	1.00	11.95	1.76	11.95
#FFFFFF	11.95	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7E

Deuteranopia (green-blind)

#00327A

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #15317b;
/* rgb */ color: rgb(21, 49, 123);
/* oklch */ color: oklch(34.3% 0.131 264.6);

Tailwind

colors: {
  custom: {
    50: '#6568a2',
    500: '#15317b',
    950: '#000000',
  },
}

SCSS

$custom: #15317b;
$custom-light: #6568a2;
$custom-dark: #000000;

JSON

{
  "hex": "#15317b",
  "rgb": {
    "r": 21,
    "g": 49,
    "b": 123
  },
  "hsl": {
    "h": 223.529,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.34281,
    "c": 0.13061,
    "h": 264.6
  },
  "luminance": 0.03786
}

Semantic roles & 50–950 ramp

primary

#15317B

secondary

#B0903B

accent

#BC3AEE

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #15317B

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

Preview Lab → · Contrast checker → · Palette generator →