#15308E#15308E

#15308E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.9% C 0.158 H 265.8°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#15308E
RGB	rgb(21, 48, 142)
HSL	hsl(227, 74%, 32%)
HSV	hsv(227, 85%, 56%)
CMYK	cmyk(85.2%, 66.2%, 0%, 44.3%)
CIE-LAB	lab(24.40, 27.63, -54.53)
CIE-LCH	lch(24.40, 61.13, 296.87°)
OKLab	oklab(35.89% -0.0115 -0.158)
OKLCH	oklch(35.89% 0.158 265.8)
XYZ	xyz(6.2470, 4.2256, 26.0723)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15308E #8E7315

analogous

#156C8E #15308E #37158E

triadic

#15308E #8E1530 #308E15

tetradic

#15308E #8E156C #8E7315 #158E37

square

#15308E #8E156C #8E7315 #158E37

split-complementary

#15308E #8E3715 #6C8E15

monochromatic

#050C23 #0D1E59 #15308E #1D42C3 #3B61E2

Accessibility & contrast

On white

11.38

#15308E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#15308E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15308E

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15308E	#FFFFFF	#000000	##FFFFFF
##15308E	1.00	11.38	1.85	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00348C

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #15308e;
/* rgb */ color: rgb(21, 48, 142);
/* oklch */ color: oklch(35.9% 0.158 265.8);

Tailwind

colors: {
  custom: {
    50: '#6b68b0',
    500: '#15308e',
    950: '#000000',
  },
}

SCSS

$custom: #15308e;
$custom-light: #6b68b0;
$custom-dark: #000000;

JSON

{
  "hex": "#15308e",
  "rgb": {
    "r": 21,
    "g": 48,
    "b": 142
  },
  "hsl": {
    "h": 226.612,
    "s": 74.233,
    "l": 31.961
  },
  "oklch": {
    "l": 0.35895,
    "c": 0.15838,
    "h": 265.8
  },
  "luminance": 0.04226
}

Semantic roles & 50–950 ramp

primary

#15308E

secondary

#C2A43D

accent

#C737F1

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #15308E

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

Preview Lab → · Contrast checker → · Palette generator →