#17180E
Closest named color: Rich Black (#0D1B2A). oklch(20.4% 0.019 112.7), rgb(23, 24, 14).
Aa
White text reads best on this color (17.89:1).
About this color
#17180E is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.053 away. White text reads best on it, at 17.89:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.89:1 |
Values
| HEX | #17180E |
| RGB | rgb(23, 24, 14) |
| HSL | hsl(66, 26%, 7%) |
| OKLCH | oklch(20.4% 0.019 112.7) |
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 #17180E | 17.89:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #17180E | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #17180E text on white | 17.89:1 | AAA | Lc 104.7 | Preferred for body text |
| #17180E 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#EAEAE5
oklch(93.6% 0.007 106.5)
-
Step 200
200
#D9DAD1
oklch(88.5% 0.012 111.8)
-
Step 300
300
#C0C2B2
oklch(80.8% 0.022 112.7)
-
Step 400
400
#A0A38A
oklch(70.6% 0.035 112.9)
-
Step 500
500
#898D6D
oklch(63.1% 0.046 113.5)
-
Step 600
600
#737755
oklch(55.7% 0.05 113.5)
-
Step 700
700
#616445
oklch(49.2% 0.047 112.6)
-
Step 800
800
#4F5139
oklch(42.6% 0.038 111.9)
-
Step 900
900
#414331
oklch(37.5% 0.029 113)
-
Step 950
950 (this color)
#17180E
oklch(20.4% 0.019 112.7)
#17180E 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) | #19170D | 0.005 |
| Deuteranopia (no green cones) | #19170E | 0.005 |
| Tritanopia (no blue cones) | #181715 | 0.015 |
| Achromatopsia (no color) | #171717 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17180E
#17180E
oklch(20.4% 0.019 112.7)
- #17161F
#17161F
oklch(20.6% 0.018 289.8)
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 #17180E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.053
- Rich Navy #001219 ΔE 0.055
- Almost Black #070D0D ΔE 0.056
- Jet #212529 ΔE 0.063
- Dark Brown #341C02 ΔE 0.066
- Dark #1B2431 ΔE 0.070
- Very Dark Brown #1D0200 ΔE 0.075
- Dark Forest Green #002D04 ΔE 0.086
Use #17180E 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.