#15317F#15317F

#15317F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.6% C 0.136 H 264.9°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#15317F
RGB	rgb(21, 49, 127)
HSL	hsl(224, 72%, 29%)
HSV	hsv(224, 83%, 50%)
CMYK	cmyk(83.5%, 61.4%, 0%, 50.2%)
CIE-LAB	lab(23.30, 20.88, -46.97)
CIE-LCH	lch(23.30, 51.40, 293.97°)
OKLab	oklab(34.65% -0.0121 -0.1358)
OKLCH	oklch(34.65% 0.136 264.9)
XYZ	xyz(5.2370, 3.8877, 20.5490)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15317F #7F6315

analogous

#15667F #15317F #2E157F

triadic

#15317F #7F1531 #317F15

tetradic

#15317F #7F1566 #7F6315 #157F2E

square

#15317F #7F1566 #7F6315 #157F2E

split-complementary

#15317F #7F2E15 #667F15

monochromatic

#040A1A #0C1D4A #15317F #1E45B4 #315FDD

Accessibility & contrast

On white

11.81

#15317F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#15317F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15317F

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15317F	#FFFFFF	#000000	##FFFFFF
##15317F	1.00	11.81	1.78	11.81
#FFFFFF	11.81	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D82

Deuteranopia (green-blind)

#00337E

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #15317f;
/* rgb */ color: rgb(21, 49, 127);
/* oklch */ color: oklch(34.6% 0.136 264.9);

Tailwind

colors: {
  custom: {
    50: '#6668a5',
    500: '#15317f',
    950: '#000000',
  },
}

SCSS

$custom: #15317f;
$custom-light: #6668a5;
$custom-dark: #000000;

JSON

{
  "hex": "#15317f",
  "rgb": {
    "r": 21,
    "g": 49,
    "b": 127
  },
  "hsl": {
    "h": 224.151,
    "s": 71.622,
    "l": 29.02
  },
  "oklch": {
    "l": 0.3465,
    "c": 0.13633,
    "h": 264.9
  },
  "luminance": 0.03888
}

Semantic roles & 50–950 ramp

primary

#15317F

secondary

#B4943C

accent

#BF39EE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #15317F

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

Preview Lab → · Contrast checker → · Palette generator →