#170F15
Closest named color: Almost Black (#070D0D). oklch(18.2% 0.018 335.4), rgb(23, 15, 21).
Aa
White text reads best on this color (18.82:1).
About this color
#170F15 is a very dark close to neutral grey. In OKLCH its lightness is 18%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.039 away. White text reads best on it, at 18.82:1.
| Hue family | Neutrals |
| Lightness | very dark (18%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.11:1 |
| White text | 18.82:1 |
Values
| HEX | #170F15 |
| RGB | rgb(23, 15, 21) |
| HSL | hsl(315, 21%, 7%) |
| OKLCH | oklch(18.2% 0.018 335.4) |
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 #170F15 | 18.82:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #170F15 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #170F15 text on white | 18.82:1 | AAA | Lc 105.3 | Preferred for body text |
| #170F15 text on black | 1.11:1 | 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
#F7F5F6
oklch(97.2% 0.002 345.2)
-
Step 100
100
#EDE8EB
oklch(93.6% 0.007 340.4)
-
Step 200
200
#DED6DC
oklch(88.4% 0.012 334.1)
-
Step 300
300
#CABCC6
oklch(81% 0.021 335.8)
-
Step 400
400
#AF99A9
oklch(70.7% 0.034 335.6)
-
Step 500
500
#9B8094
oklch(63.1% 0.044 335.4)
-
Step 600
600
#85697E
oklch(55.5% 0.047 335.2)
-
Step 700
700
#71586A
oklch(49.2% 0.042 336.5)
-
Step 800
800
#5C4857
oklch(42.8% 0.036 335.2)
-
Step 900
900
#4B3C47
oklch(37.6% 0.027 335.7)
-
Step 950
950 (this color)
#170F15
oklch(18.2% 0.018 335.4)
#170F15 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) | #0F1115 | 0.018 |
| Deuteranopia (no green cones) | #111215 | 0.016 |
| Tritanopia (no blue cones) | #180F11 | 0.008 |
| Achromatopsia (no color) | #111111 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170F15
#170F15
oklch(18.2% 0.018 335.4)
- #0C140F
#0C140F
oklch(18.1% 0.016 157)
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 #170F15, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.039
- Rich Navy #001219 ΔE 0.043
- Rich Black #0D1B2A ΔE 0.052
- Very Dark Brown #1D0200 ΔE 0.056
- Dark #1B2431 ΔE 0.082
- Jet #212529 ΔE 0.083
- Very Dark Purple #2A0134 ΔE 0.087
- Midnight Purple #280137 ΔE 0.089
Use #170F15 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.