#170C09
Closest named color: Almost Black (#070D0D). oklch(16.9% 0.02 36.1), rgb(23, 12, 9).
Aa
White text reads best on this color (19.21:1).
About this color
#170C09 is a very dark close to neutral grey. In OKLCH its lightness is 17%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.034 away. White text reads best on it, at 19.21:1.
| Hue family | Neutrals |
| Lightness | very dark (17%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.09:1 |
| White text | 19.21:1 |
Values
| HEX | #170C09 |
| RGB | rgb(23, 12, 9) |
| HSL | hsl(13, 44%, 6%) |
| OKLCH | oklch(16.9% 0.02 36.1) |
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 #170C09 | 19.21:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #170C09 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #170C09 text on white | 19.21:1 | AAA | Lc 105.5 | Preferred for body text |
| #170C09 text on black | 1.09:1 | 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EEE8E7
oklch(93.5% 0.007 28.8)
-
Step 200
200
#E2D6D3
oklch(88.5% 0.014 34.3)
-
Step 300
300
#CFBCB6
oklch(80.9% 0.023 38.3)
-
Step 400
400
#B79990
oklch(70.7% 0.038 37.3)
-
Step 500
500
#A57F75
oklch(63% 0.05 35.2)
-
Step 600
600
#90685E
oklch(55.6% 0.054 34.5)
-
Step 700
700
#7A574D
oklch(49.1% 0.049 36.6)
-
Step 800
800
#63473F
oklch(42.6% 0.041 36.6)
-
Step 900
900
#513C36
oklch(37.7% 0.032 36.5)
-
Step 950
950 (this color)
#170C09
oklch(16.9% 0.02 36.1)
#170C09 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) | #0F0D09 | 0.018 |
| Deuteranopia (no green cones) | #111009 | 0.019 |
| Tritanopia (no blue cones) | #190A0B | 0.010 |
| Achromatopsia (no color) | #0F0F0F | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170C09
#170C09
oklch(16.9% 0.02 36.1)
- #051115
#051115
oklch(16.8% 0.02 220.1)
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 #170C09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.034
- Very Dark Brown #1D0200 ΔE 0.038
- Rich Navy #001219 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.072
- Dark Maroon #3C0008 ΔE 0.091
- Dark Brown #341C02 ΔE 0.093
- Jet #212529 ΔE 0.097
- Dark #1B2431 ΔE 0.100
Use #170C09 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.