#1F170B
Closest named color: Dark Brown (#341C02). oklch(21.1% 0.025 76.9), rgb(31, 23, 11).
Aa
White text reads best on this color (17.71:1).
About this color
#1F170B is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dark Brown (#341C02), ΔE 0.052 away. White text reads best on it, at 17.71:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.18:1 |
| White text | 17.71:1 |
Values
| HEX | #1F170B |
| RGB | rgb(31, 23, 11) |
| HSL | hsl(36, 48%, 8%) |
| OKLCH | oklch(21.1% 0.025 76.9) |
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 #1F170B | 17.71:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #1F170B | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #1F170B text on white | 17.71:1 | AAA | Lc 104.5 | Preferred for body text |
| #1F170B text on black | 1.18:1 | 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
#F7F5F2
oklch(97.1% 0.005 78.3)
-
Step 100
100
#EDE9E4
oklch(93.6% 0.008 73.7)
-
Step 200
200
#DFD8CD
oklch(88.5% 0.017 79.3)
-
Step 300
300
#CCBFAC
oklch(81% 0.03 77.5)
-
Step 400
400
#B29D80
oklch(70.7% 0.047 75.8)
-
Step 500
500
#9E8560
oklch(63.1% 0.06 77.1)
-
Step 600
600
#896E46
oklch(55.5% 0.066 76.6)
-
Step 700
700
#745C38
oklch(49% 0.06 76.7)
-
Step 800
800
#5F4B2E
oklch(42.6% 0.051 76)
-
Step 900
900
#4E3F29
oklch(37.8% 0.04 76.6)
-
Step 950
950 (this color)
#1F170B
oklch(21.1% 0.025 76.9)
#1F170B 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) | #1A170A | 0.011 |
| Deuteranopia (no green cones) | #1C190B | 0.009 |
| Tritanopia (no blue cones) | #221514 | 0.021 |
| Achromatopsia (no color) | #181818 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F170B
#1F170B
oklch(21.1% 0.025 76.9)
- #111924
#111924
oklch(21.1% 0.025 256.5)
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 #1F170B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.061
- Jet #212529 ΔE 0.062
- Almost Black #070D0D ΔE 0.066
- Rich Navy #001219 ΔE 0.068
- Dark #1B2431 ΔE 0.071
- Very Dark Brown #1D0200 ΔE 0.072
- Chocolate Brown #411900 ΔE 0.078
Use #1F170B 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.