#1C1917
Closest named color: Rich Black (#0D1B2A). oklch(21.6% 0.006 56), rgb(28, 25, 23).
Aa
White text reads best on this color (17.48:1).
About this color
#1C1917 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.006. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.042 away. White text reads best on it, at 17.48:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.006) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.48:1 |
Values
| HEX | #1C1917 |
| RGB | rgb(28, 25, 23) |
| HSL | hsl(24, 10%, 10%) |
| OKLCH | oklch(21.6% 0.006 56) |
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 #1C1917 | 17.48:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #1C1917 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #1C1917 text on white | 17.48:1 | AAA | Lc 104.3 | Preferred for body text |
| #1C1917 text on black | 1.20:1 | 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
#F6F5F5
oklch(97.1% 0.001 17.2)
-
Step 100
100
#EBE9E8
oklch(93.5% 0.003 48.7)
-
Step 200
200
#DBD8D6
oklch(88.4% 0.004 56.4)
-
Step 300
300
#C4BFBC
oklch(80.8% 0.007 53.4)
-
Step 400
400
#A79F9A
oklch(70.8% 0.012 54.4)
-
Step 500
500
#918781
oklch(63% 0.015 53.2)
-
Step 600
600
#7B716A
oklch(55.6% 0.016 57.4)
-
Step 700
700
#685F59
oklch(49.2% 0.015 56)
-
Step 800
800
#554D49
oklch(42.7% 0.013 48.4)
-
Step 900
900
#46403D
oklch(37.7% 0.01 48.4)
-
Step 950
950 (this color)
#1C1917
oklch(21.6% 0.006 56)
#1C1917 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) | #1A1917 | 0.004 |
| Deuteranopia (no green cones) | #1B1A17 | 0.004 |
| Tritanopia (no blue cones) | #1D1818 | 0.005 |
| Achromatopsia (no color) | #1A1A1A | 0.006 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1C1917, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.042
- Jet #212529 ΔE 0.049
- Dark #1B2431 ΔE 0.054
- Rich Navy #001219 ΔE 0.060
- Dark Brown #341C02 ΔE 0.061
- Almost Black #070D0D ΔE 0.066
- Oxford Blue #1B263B ΔE 0.071
- Very Dark Brown #1D0200 ΔE 0.081
Use #1C1917 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.