#15337D#15337D

#15337D is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.9% C 0.131 H 264.0°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#15337D
RGB	rgb(21, 51, 125)
HSL	hsl(223, 71%, 29%)
HSV	hsv(223, 83%, 49%)
CMYK	cmyk(83.2%, 59.2%, 0%, 51%)
CIE-LAB	lab(23.69, 18.63, -45.06)
CIE-LCH	lch(23.69, 48.76, 292.47°)
OKLab	oklab(34.89% -0.0136 -0.1301)
OKLCH	oklch(34.89% 0.131 264)
XYZ	xyz(5.1934, 4.0071, 19.8978)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15337D #7D5F15

analogous

#15677D #15337D #2B157D

triadic

#15337D #7D1533 #337D15

tetradic

#15337D #7D1567 #7D5F15 #157D2B

square

#15337D #7D1567 #7D5F15 #157D2B

split-complementary

#15337D #7D2B15 #677D15

monochromatic

#040B1A #0C1E49 #15337D #1E48B1 #3062DC

Accessibility & contrast

On white

11.66

#15337D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#15337D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15337D

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15337D	#FFFFFF	#000000	##FFFFFF
##15337D	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D80

Deuteranopia (green-blind)

#00347C

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #15337d;
/* rgb */ color: rgb(21, 51, 125);
/* oklch */ color: oklch(34.9% 0.131 264.0);

Tailwind

colors: {
  custom: {
    50: '#666aa3',
    500: '#15337d',
    950: '#000000',
  },
}

SCSS

$custom: #15337d;
$custom-light: #666aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#15337d",
  "rgb": {
    "r": 21,
    "g": 51,
    "b": 125
  },
  "hsl": {
    "h": 222.692,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.34894,
    "c": 0.13085,
    "h": 264
  },
  "luminance": 0.04008
}

Semantic roles & 50–950 ramp

primary

#15337D

secondary

#B2903C

accent

#BA3AEE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #15337D

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

Preview Lab → · Contrast checker → · Palette generator →