#17152B
Closest named color: Rich Black (#0D1B2A). oklch(21.1% 0.043 286.3), rgb(23, 21, 43).
Aa
White text reads best on this color (17.81:1).
About this color
#17152B is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.043 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.026 away. White text reads best on it, at 17.81:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.81:1 |
Values
| HEX | #17152B |
| RGB | rgb(23, 21, 43) |
| HSL | hsl(245, 34%, 13%) |
| OKLCH | oklch(21.1% 0.043 286.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #17152B | 17.81:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #17152B | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #17152B text on white | 17.81:1 | AAA | Lc 104.6 | Preferred for body text |
| #17152B text on black | 1.17:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E9F4
oklch(93.7% 0.015 286.1)
-
Step 200
200
#D7D7EB
oklch(88.5% 0.027 285.8)
-
Step 300
300
#BDBCE1
oklch(80.8% 0.052 286.4)
-
Step 400
400
#9C99D1
oklch(70.6% 0.081 286.6)
-
Step 500
500
#8480C5
oklch(63.1% 0.103 285.7)
-
Step 600
600
#6F68B2
oklch(55.7% 0.113 286.5)
-
Step 700
700
#5D5699
oklch(49.1% 0.105 286.6)
-
Step 800
800
#4C477C
oklch(42.8% 0.086 286.5)
-
Step 900
900
#3F3C64
oklch(37.8% 0.067 286.1)
-
Step 950
950 (this color)
#17152B
oklch(21.1% 0.043 286.3)
#17152B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0E182C | 0.017 |
| Deuteranopia (no green cones) | #0D172A | 0.018 |
| Tritanopia (no blue cones) | #12191D | 0.036 |
| Achromatopsia (no color) | #181818 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17152B
#17152B
oklch(21.1% 0.043 286.3)
- #1B1901
#1B1901
oklch(20.9% 0.042 105.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #17152B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.026
- Dark #1B2431 ΔE 0.053
- Rich Navy #001219 ΔE 0.058
- Oxford Blue #1B263B ΔE 0.061
- Jet #212529 ΔE 0.063
- Navy Blue #001146 ΔE 0.065
- Midnight Purple #280137 ΔE 0.066
- Very Dark Purple #2A0134 ΔE 0.067
Use #17152B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.