#15104B#15104B

#15104B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.8% C 0.104 H 278.1°. Best body text is #FFFFFF at 17.39:1 contrast (WCAG AA passes).

Color values

HEX	#15104B
RGB	rgb(21, 16, 75)
HSL	hsl(245, 65%, 18%)
HSV	hsv(245, 79%, 29%)
CMYK	cmyk(72%, 78.7%, 0%, 70.6%)
CIE-LAB	lab(9.30, 23.32, -35.58)
CIE-LCH	lch(9.30, 42.54, 303.24°)
OKLab	oklab(22.81% 0.0145 -0.1027)
OKLCH	oklch(22.81% 0.104 278.1)
XYZ	xyz(1.7641, 1.0379, 6.7626)
Luminance	0.0104 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15104B #464B10

analogous

#10284B #15104B #32104B

triadic

#15104B #4B1510 #104B15

tetradic

#15104B #4B1028 #464B10 #104B32

square

#15104B #4B1028 #464B10 #104B32

split-complementary

#15104B #4B3210 #284B10

monochromatic

#070519 #070519 #15104B #231B7D #3126B0

Accessibility & contrast

On white

17.39

#15104B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#15104B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15104B

17.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15104B	#FFFFFF	#000000	##FFFFFF
##15104B	1.00	17.39	1.21	17.39
#FFFFFF	17.39	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4D

Deuteranopia (green-blind)

#00184A

Tritanopia (blue-blind)

#00202C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #15104b;
/* rgb */ color: rgb(21, 16, 75);
/* oklch */ color: oklch(22.8% 0.104 278.1);

Tailwind

colors: {
  custom: {
    50: '#5b4f7e',
    500: '#15104b',
    950: '#000000',
  },
}

SCSS

$custom: #15104b;
$custom-light: #5b4f7e;
$custom-dark: #000000;

JSON

{
  "hex": "#15104b",
  "rgb": {
    "r": 21,
    "g": 16,
    "b": 75
  },
  "hsl": {
    "h": 245.085,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.22812,
    "c": 0.10373,
    "h": 278.1
  },
  "luminance": 0.01038
}

Semantic roles & 50–950 ramp

primary

#15104B

secondary

#7E8532

accent

#E840DA

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #15104B

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

Preview Lab → · Contrast checker → · Palette generator →