#15307F#15307F

#15307F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.4% C 0.138 H 265.2°. Best body text is #FFFFFF at 11.92:1 contrast (WCAG AA passes).

Color values

HEX	#15307F
RGB	rgb(21, 48, 127)
HSL	hsl(225, 72%, 29%)
HSV	hsv(225, 83%, 50%)
CMYK	cmyk(83.5%, 62.2%, 0%, 50.2%)
CIE-LAB	lab(23.02, 21.59, -47.43)
CIE-LCH	lch(23.02, 52.11, 294.47°)
OKLab	oklab(34.44% -0.0115 -0.1371)
OKLCH	oklch(34.44% 0.138 265.2)
XYZ	xyz(5.1956, 3.8050, 20.5352)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15307F #7F6415

analogous

#15657F #15307F #2F157F

triadic

#15307F #7F1530 #307F15

tetradic

#15307F #7F1565 #7F6415 #157F2F

square

#15307F #7F1565 #7F6415 #157F2F

split-complementary

#15307F #7F2F15 #657F15

monochromatic

#040A1A #0C1C4A #15307F #1E44B4 #315DDD

Accessibility & contrast

On white

11.92

#15307F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#15307F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15307F

11.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15307F	#FFFFFF	#000000	##FFFFFF
##15307F	1.00	11.92	1.76	11.92
#FFFFFF	11.92	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C82

Deuteranopia (green-blind)

#00327D

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #15307f;
/* rgb */ color: rgb(21, 48, 127);
/* oklch */ color: oklch(34.4% 0.138 265.2);

Tailwind

colors: {
  custom: {
    50: '#6667a5',
    500: '#15307f',
    950: '#000000',
  },
}

SCSS

$custom: #15307f;
$custom-light: #6667a5;
$custom-dark: #000000;

JSON

{
  "hex": "#15307f",
  "rgb": {
    "r": 21,
    "g": 48,
    "b": 127
  },
  "hsl": {
    "h": 224.717,
    "s": 71.622,
    "l": 29.02
  },
  "oklch": {
    "l": 0.3444,
    "c": 0.13763,
    "h": 265.2
  },
  "luminance": 0.03806
}

Semantic roles & 50–950 ramp

primary

#15307F

secondary

#B4953C

accent

#C039EE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #15307F

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

Preview Lab → · Contrast checker → · Palette generator →