#17153C#17153C

#17153C is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.4% C 0.073 H 281.1°. Best body text is #FFFFFF at 17.37:1 contrast (WCAG AA passes).

Color values

HEX	#17153C
RGB	rgb(23, 21, 60)
HSL	hsl(243, 48%, 16%)
HSV	hsv(243, 65%, 24%)
CMYK	cmyk(61.7%, 65%, 0%, 76.5%)
CIE-LAB	lab(9.36, 14.33, -24.91)
CIE-LCH	lch(9.36, 28.74, 299.91°)
OKLab	oklab(22.44% 0.014 -0.0713)
OKLCH	oklch(22.44% 0.073 281.1)
XYZ	xyz(1.4369, 1.0446, 4.4000)
Luminance	0.0104 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17153C #3A3C15

analogous

#15263C #17153C #2A153C

triadic

#17153C #3C1715 #153C17

tetradic

#17153C #3C1526 #3A3C15 #153C2A

square

#17153C #3C1526 #3A3C15 #153C2A

split-complementary

#17153C #3C2A15 #263C15

monochromatic

#090817 #090817 #17153C #282569 #3A3597

Accessibility & contrast

On white

17.37

#17153C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#17153C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17153C

17.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17153C	#FFFFFF	#000000	##FFFFFF
##17153C	1.00	17.37	1.21	17.37
#FFFFFF	17.37	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C3D

Deuteranopia (green-blind)

#00193B

Tritanopia (blue-blind)

#071E26

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #17153c;
/* rgb */ color: rgb(23, 21, 60);
/* oklch */ color: oklch(22.4% 0.073 281.1);

Tailwind

colors: {
  custom: {
    50: '#585272',
    500: '#17153c',
    950: '#000000',
  },
}

SCSS

$custom: #17153c;
$custom-light: #585272;
$custom-dark: #000000;

JSON

{
  "hex": "#17153c",
  "rgb": {
    "r": 23,
    "g": 21,
    "b": 60
  },
  "hsl": {
    "h": 243.077,
    "s": 48.148,
    "l": 15.882
  },
  "oklch": {
    "l": 0.22441,
    "c": 0.07268,
    "h": 281.1
  },
  "luminance": 0.01045
}

Semantic roles & 50–950 ramp

primary

#17153C

secondary

#717439

accent

#D850D1

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #17153C

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

Preview Lab → · Contrast checker → · Palette generator →