#17211D
Closest named color: Jet (#212529). oklch(23.7% 0.016 168.5), rgb(23, 33, 29).
Aa
White text reads best on this color (16.51:1).
About this color
#17211D is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.031 away. White text reads best on it, at 16.51:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.27:1 |
| White text | 16.51:1 |
Values
| HEX | #17211D |
| RGB | rgb(23, 33, 29) |
| HSL | hsl(156, 18%, 11%) |
| OKLCH | oklch(23.7% 0.016 168.5) |
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 #17211D | 16.51:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #17211D | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #17211D text on white | 16.51:1 | AAA | Lc 103.5 | Preferred for body text |
| #17211D text on black | 1.27:1 | 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
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D3DBD8
oklch(88.4% 0.01 171.8)
-
Step 300
300
#B5C5BE
oklch(80.9% 0.02 167.8)
-
Step 400
400
#8FA79D
oklch(70.7% 0.03 168.4)
-
Step 500
500
#739185
oklch(63% 0.038 168.8)
-
Step 600
600
#5B7C6F
oklch(55.7% 0.043 168.5)
-
Step 700
700
#4A685D
oklch(49% 0.039 170)
-
Step 800
800
#3D554C
oklch(42.7% 0.033 169.6)
-
Step 900
900
#34463F
oklch(37.6% 0.026 169.1)
-
Step 950
950 (this color)
#17211D
oklch(23.7% 0.016 168.5)
#17211D 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) | #20201D | 0.016 |
| Deuteranopia (no green cones) | #1F1E1D | 0.017 |
| Tritanopia (no blue cones) | #152120 | 0.006 |
| Achromatopsia (no color) | #1F1F1F | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17211D
#17211D
oklch(23.7% 0.016 168.5)
- #251B20
#251B20
oklch(23.6% 0.018 347)
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 #17211D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.031
- Dark #1B2431 ΔE 0.038
- Rich Black #0D1B2A ΔE 0.042
- Oxford Blue #1B263B ΔE 0.057
- Dark Brown #341C02 ΔE 0.062
- Dark Forest Green #002D04 ΔE 0.072
- Rich Navy #001219 ΔE 0.072
- Very Dark Green #062E03 ΔE 0.073
Use #17211D 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.