#17231D
Closest named color: Jet (#212529). oklch(24.3% 0.02 162.7), rgb(23, 35, 29).
Aa
White text reads best on this color (16.22:1).
About this color
#17231D is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.029 away. White text reads best on it, at 16.22:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.29:1 |
| White text | 16.22:1 |
Values
| HEX | #17231D |
| RGB | rgb(23, 35, 29) |
| HSL | hsl(150, 21%, 11%) |
| OKLCH | oklch(24.3% 0.02 162.7) |
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 #17231D | 16.22:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #17231D | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #17231D text on white | 16.22:1 | AAA | Lc 103.2 | Preferred for body text |
| #17231D text on black | 1.29:1 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD6
oklch(88.5% 0.013 159.9)
-
Step 300
300
#B3C6BC
oklch(80.9% 0.025 163)
-
Step 400
400
#8CA99A
oklch(70.8% 0.039 162.8)
-
Step 500
500
#6F9381
oklch(63.1% 0.048 162.9)
-
Step 600
600
#567D6A
oklch(55.5% 0.053 162.9)
-
Step 700
700
#466A58
oklch(49.1% 0.051 162.1)
-
Step 800
800
#3A5648
oklch(42.6% 0.041 162.3)
-
Step 900
900
#32473D
oklch(37.7% 0.031 163.9)
-
Step 950
950 (this color)
#17231D
oklch(24.3% 0.02 162.7)
#17231D 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) | #23211D | 0.021 |
| Deuteranopia (no green cones) | #20201D | 0.018 |
| Tritanopia (no blue cones) | #152321 | 0.008 |
| Achromatopsia (no color) | #202020 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17231D
#17231D
oklch(24.3% 0.02 162.7)
- #271C22
#271C22
oklch(24.2% 0.02 344.8)
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 #17231D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.029
- Dark #1B2431 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.048
- Oxford Blue #1B263B ΔE 0.057
- Dark Brown #341C02 ΔE 0.061
- Dark Forest Green #002D04 ΔE 0.066
- Very Dark Green #062E03 ΔE 0.067
- Rich Navy #001219 ΔE 0.079
Use #17231D 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.