#1B170C
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.021 90.3), rgb(27, 23, 12).
Aa
White text reads best on this color (17.88:1).
About this color
#1B170C is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.057 away. White text reads best on it, at 17.88:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.88:1 |
Values
| HEX | #1B170C |
| RGB | rgb(27, 23, 12) |
| HSL | hsl(44, 38%, 8%) |
| OKLCH | oklch(20.6% 0.021 90.3) |
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 #1B170C | 17.88:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #1B170C | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #1B170C text on white | 17.88:1 | AAA | Lc 104.6 | Preferred for body text |
| #1B170C 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#ECEAE4
oklch(93.7% 0.008 91.5)
-
Step 200
200
#DCD9CF
oklch(88.5% 0.014 93)
-
Step 300
300
#C7C0AF
oklch(80.9% 0.025 88.3)
-
Step 400
400
#AAA085
oklch(70.7% 0.04 90.1)
-
Step 500
500
#958966
oklch(63.2% 0.051 91.4)
-
Step 600
600
#80724D
oklch(55.6% 0.056 89.6)
-
Step 700
700
#6C603E
oklch(49.2% 0.052 90.8)
-
Step 800
800
#584E34
oklch(42.7% 0.042 89.4)
-
Step 900
900
#48412D
oklch(37.7% 0.033 91)
-
Step 950
950 (this color)
#1B170C
oklch(20.6% 0.021 90.3)
#1B170C 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) | #19170B | 0.005 |
| Deuteranopia (no green cones) | #1A180C | 0.004 |
| Tritanopia (no blue cones) | #1D1514 | 0.019 |
| Achromatopsia (no color) | #171717 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B170C
#1B170C
oklch(20.6% 0.021 90.3)
- #141721
#141721
oklch(20.6% 0.021 271.6)
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 #1B170C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.057
- Almost Black #070D0D ΔE 0.059
- Dark Brown #341C02 ΔE 0.060
- Rich Navy #001219 ΔE 0.061
- Jet #212529 ΔE 0.064
- Very Dark Brown #1D0200 ΔE 0.071
- Dark #1B2431 ΔE 0.071
- Chocolate Brown #411900 ΔE 0.086
Use #1B170C 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.