#15366B#15366B

#15366B is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.1% C 0.100 H 259.6°. Best body text is #FFFFFF at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#15366B
RGB	rgb(21, 54, 107)
HSL	hsl(217, 67%, 25%)
HSV	hsv(217, 80%, 42%)
CMYK	cmyk(80.4%, 49.5%, 0%, 58%)
CIE-LAB	lab(23.20, 8.94, -34.38)
CIE-LCH	lch(23.20, 35.52, 284.58°)
OKLab	oklab(34.07% -0.0182 -0.0987)
OKLCH	oklch(34.07% 0.1 259.6)
XYZ	xyz(4.2813, 3.8588, 14.4263)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15366B #6B4A15

analogous

#15616B #15366B #1F156B

triadic

#15366B #6B1536 #366B15

tetradic

#15366B #6B1561 #6B4A15 #156B1F

square

#15366B #6B1561 #6B4A15 #156B1F

split-complementary

#15366B #6B1F15 #616B15

monochromatic

#050D1A #0B1C38 #15366B #1F509E #296AD1

Accessibility & contrast

On white

11.85

#15366B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#15366B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15366B

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15366B	#FFFFFF	#000000	##FFFFFF
##15366B	1.00	11.85	1.77	11.85
#FFFFFF	11.85	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193B6D

Deuteranopia (green-blind)

#03346A

Tritanopia (blue-blind)

#00434B

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #15366b;
/* rgb */ color: rgb(21, 54, 107);
/* oklch */ color: oklch(34.1% 0.100 259.6);

Tailwind

colors: {
  custom: {
    50: '#616c96',
    500: '#15366b',
    950: '#000000',
  },
}

SCSS

$custom: #15366b;
$custom-light: #616c96;
$custom-dark: #000000;

JSON

{
  "hex": "#15366b",
  "rgb": {
    "r": 21,
    "g": 54,
    "b": 107
  },
  "hsl": {
    "h": 216.977,
    "s": 67.188,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34073,
    "c": 0.10033,
    "h": 259.6
  },
  "luminance": 0.03859
}

Semantic roles & 50–950 ramp

primary

#15366B

secondary

#A27A3A

accent

#A83EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #15366B

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

Preview Lab → · Contrast checker → · Palette generator →