#15397F#15397F

#15397F is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.4% C 0.126 H 261.9°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#15397F
RGB	rgb(21, 57, 127)
HSL	hsl(220, 72%, 29%)
HSV	hsv(220, 83%, 50%)
CMYK	cmyk(83.5%, 55.1%, 0%, 50.2%)
CIE-LAB	lab(25.62, 15.20, -43.20)
CIE-LCH	lch(25.62, 45.79, 289.39°)
OKLab	oklab(36.4% -0.0178 -0.1246)
OKLCH	oklch(36.4% 0.126 261.9)
XYZ	xyz(5.6018, 4.6173, 20.6706)
Luminance	0.0462 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15397F #7F5B15

analogous

#156E7F #15397F #26157F

triadic

#15397F #7F1539 #397F15

tetradic

#15397F #7F156E #7F5B15 #157F26

square

#15397F #7F156E #7F5B15 #157F26

split-complementary

#15397F #7F2615 #6E7F15

monochromatic

#040C1A #0C214A #15397F #1E51B4 #316CDD

Accessibility & contrast

On white

10.92

#15397F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#15397F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15397F

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15397F	#FFFFFF	#000000	##FFFFFF
##15397F	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#024281

Deuteranopia (green-blind)

#00387E

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #15397f;
/* rgb */ color: rgb(21, 57, 127);
/* oklch */ color: oklch(36.4% 0.126 261.9);

Tailwind

colors: {
  custom: {
    50: '#666ea5',
    500: '#15397f',
    950: '#000000',
  },
}

SCSS

$custom: #15397f;
$custom-light: #666ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#15397f",
  "rgb": {
    "r": 21,
    "g": 57,
    "b": 127
  },
  "hsl": {
    "h": 219.623,
    "s": 71.622,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36398,
    "c": 0.12582,
    "h": 261.9
  },
  "luminance": 0.04618
}

Semantic roles & 50–950 ramp

primary

#15397F

secondary

#B48B3C

accent

#B139EE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #15397F

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

Preview Lab → · Contrast checker → · Palette generator →