#170F24
Closest named color: Rich Black (#0D1B2A). oklch(19.1% 0.042 300), rgb(23, 15, 36).
Aa
White text reads best on this color (18.58:1).
About this color
#170F24 is a very dark, muted purple. In OKLCH its lightness is 19%, its chroma 0.042 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.042 away. White text reads best on it, at 18.58:1.
| Hue family | Purples |
| Lightness | very dark (19%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.13:1 |
| White text | 18.58:1 |
Values
| HEX | #170F24 |
| RGB | rgb(23, 15, 36) |
| HSL | hsl(263, 41%, 10%) |
| OKLCH | oklch(19.1% 0.042 300) |
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 #170F24 | 18.58:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #170F24 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #170F24 text on white | 18.58:1 | AAA | Lc 105.1 | Preferred for body text |
| #170F24 text on black | 1.13:1 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#EBE8F2
oklch(93.6% 0.014 299.8)
-
Step 200
200
#DCD5E9
oklch(88.5% 0.028 301.7)
-
Step 300
300
#C5BADD
oklch(80.9% 0.05 299.6)
-
Step 400
400
#A895CC
oklch(70.6% 0.082 300.2)
-
Step 500
500
#937BBE
oklch(63.1% 0.102 300)
-
Step 600
600
#7E63AB
oklch(55.7% 0.112 300.1)
-
Step 700
700
#6A5293
oklch(49.2% 0.104 299.6)
-
Step 800
800
#564377
oklch(42.6% 0.086 299.6)
-
Step 900
900
#473960
oklch(37.7% 0.067 299.7)
-
Step 950
950 (this color)
#170F24
oklch(19.1% 0.042 300)
#170F24 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) | #091325 | 0.027 |
| Deuteranopia (no green cones) | #0B1323 | 0.026 |
| Tritanopia (no blue cones) | #141317 | 0.034 |
| Achromatopsia (no color) | #131313 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170F24
#170F24
oklch(19.1% 0.042 300)
- #121701
#121701
oklch(19.3% 0.043 120)
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 #170F24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.042
- Rich Navy #001219 ΔE 0.052
- Almost Black #070D0D ΔE 0.060
- Very Dark Purple #2A0134 ΔE 0.063
- Midnight Purple #280137 ΔE 0.063
- Dark Navy #000435 ΔE 0.073
- Dark #1B2431 ΔE 0.073
- Midnight #03012D ΔE 0.073
Use #170F24 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.