#15307C#15307C

#15307C is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.2% C 0.133 H 265.0°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#15307C
RGB	rgb(21, 48, 124)
HSL	hsl(224, 71%, 28%)
HSV	hsv(224, 83%, 49%)
CMYK	cmyk(83.1%, 61.3%, 0%, 51.4%)
CIE-LAB	lab(22.75, 20.35, -45.96)
CIE-LCH	lch(22.75, 50.27, 293.89°)
OKLab	oklab(34.16% -0.0116 -0.1329)
OKLCH	oklch(34.16% 0.133 265)
XYZ	xyz(5.0030, 3.7280, 19.5208)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15307C #7C6115

analogous

#15637C #15307C #2D157C

triadic

#15307C #7C1530 #307C15

tetradic

#15307C #7C1563 #7C6115 #157C2D

square

#15307C #7C1563 #7C6115 #157C2D

split-complementary

#15307C #7C2D15 #637C15

monochromatic

#040A1A #0C1C48 #15307C #1E44B0 #305DDC

Accessibility & contrast

On white

12.03

#15307C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#15307C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15307C

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15307C	#FFFFFF	#000000	##FFFFFF
##15307C	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7F

Deuteranopia (green-blind)

#00327B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #15307c;
/* rgb */ color: rgb(21, 48, 124);
/* oklch */ color: oklch(34.2% 0.133 265.0);

Tailwind

colors: {
  custom: {
    50: '#6667a3',
    500: '#15307c',
    950: '#000000',
  },
}

SCSS

$custom: #15307c;
$custom-light: #6667a3;
$custom-dark: #000000;

JSON

{
  "hex": "#15307c",
  "rgb": {
    "r": 21,
    "g": 48,
    "b": 124
  },
  "hsl": {
    "h": 224.272,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.34159,
    "c": 0.13336,
    "h": 265
  },
  "luminance": 0.03729
}

Semantic roles & 50–950 ramp

primary

#15307C

secondary

#B1923C

accent

#BF3AEE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #15307C

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

Preview Lab → · Contrast checker → · Palette generator →