#15308F#15308F

#15308F is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.160 H 265.9°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#15308F
RGB	rgb(21, 48, 143)
HSL	hsl(227, 74%, 32%)
HSV	hsv(227, 85%, 56%)
CMYK	cmyk(85.3%, 66.4%, 0%, 43.9%)
CIE-LAB	lab(24.50, 28.02, -55.00)
CIE-LCH	lch(24.50, 61.72, 297.00°)
OKLab	oklab(35.99% -0.0115 -0.1593)
OKLCH	oklch(35.99% 0.16 265.9)
XYZ	xyz(6.3224, 4.2557, 26.4695)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15308F #8F7415

analogous

#156D8F #15308F #37158F

triadic

#15308F #8F1530 #308F15

tetradic

#15308F #8F156D #8F7415 #158F37

square

#15308F #8F156D #8F7415 #158F37

split-complementary

#15308F #8F3715 #6D8F15

monochromatic

#050C24 #0D1E5A #15308F #1D42C4 #3C61E2

Accessibility & contrast

On white

11.34

#15308F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#15308F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15308F

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15308F	#FFFFFF	#000000	##FFFFFF
##15308F	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004092

Deuteranopia (green-blind)

#00358D

Tritanopia (blue-blind)

#00495B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #15308f;
/* rgb */ color: rgb(21, 48, 143);
/* oklch */ color: oklch(36.0% 0.160 265.9);

Tailwind

colors: {
  custom: {
    50: '#6b68b1',
    500: '#15308f',
    950: '#000000',
  },
}

SCSS

$custom: #15308f;
$custom-light: #6b68b1;
$custom-dark: #000000;

JSON

{
  "hex": "#15308f",
  "rgb": {
    "r": 21,
    "g": 48,
    "b": 143
  },
  "hsl": {
    "h": 226.721,
    "s": 74.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.35995,
    "c": 0.15973,
    "h": 265.9
  },
  "luminance": 0.04257
}

Semantic roles & 50–950 ramp

primary

#15308F

secondary

#C2A53E

accent

#C837F1

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #15308F

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

Preview Lab → · Contrast checker → · Palette generator →