#23170B
Closest named color: Dark Brown (#341C02). oklch(21.7% 0.029 65.3), rgb(35, 23, 11).
Aa
White text reads best on this color (17.51:1).
About this color
#23170B is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Dark Brown (#341C02), ΔE 0.045 away. White text reads best on it, at 17.51:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.19:1 |
| White text | 17.51:1 |
Values
| HEX | #23170B |
| RGB | rgb(35, 23, 11) |
| HSL | hsl(30, 52%, 9%) |
| OKLCH | oklch(21.7% 0.029 65.3) |
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 #23170B | 17.51:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #23170B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #23170B text on white | 17.51:1 | AAA | Lc 104.3 | Preferred for body text |
| #23170B text on black | 1.19:1 | 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
#F8F5F2
oklch(97.2% 0.005 67.8)
-
Step 100
100
#EFE9E3
oklch(93.7% 0.01 67.7)
-
Step 200
200
#E2D7CC
oklch(88.5% 0.019 67.6)
-
Step 300
300
#D1BDAA
oklch(81% 0.035 65.9)
-
Step 400
400
#B99A7D
oklch(70.7% 0.055 64.9)
-
Step 500
500
#A7815C
oklch(63.1% 0.07 65.2)
-
Step 600
600
#926A42
oklch(55.6% 0.076 65.2)
-
Step 700
700
#7C5834
oklch(49% 0.07 64.9)
-
Step 800
800
#65482B
oklch(42.6% 0.058 65.1)
-
Step 900
900
#523D27
oklch(37.7% 0.045 67)
-
Step 950
950 (this color)
#23170B
oklch(21.7% 0.029 65.3)
#23170B 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) | #1B180A | 0.018 |
| Deuteranopia (no green cones) | #1E1A0B | 0.014 |
| Tritanopia (no blue cones) | #271414 | 0.023 |
| Achromatopsia (no color) | #191919 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23170B
#23170B
oklch(21.7% 0.029 65.3)
- #0E1B26
#0E1B26
oklch(21.6% 0.028 245.2)
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 #23170B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.045
- Jet #212529 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.064
- Chocolate Brown #411900 ΔE 0.070
- Dark #1B2431 ΔE 0.070
- Very Dark Brown #1D0200 ΔE 0.073
- Dark Maroon #3C0008 ΔE 0.073
- Almost Black #070D0D ΔE 0.074
Use #23170B 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.