#211717
Closest named color: Rich Black (#0D1B2A). oklch(21.7% 0.016 18.5), rgb(33, 23, 23).
Aa
White text reads best on this color (17.50:1).
About this color
#211717 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.047 away. White text reads best on it, at 17.50:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.50:1 |
Values
| HEX | #211717 |
| RGB | rgb(33, 23, 23) |
| HSL | hsl(0, 18%, 11%) |
| OKLCH | oklch(21.7% 0.016 18.5) |
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 #211717 | 17.50:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #211717 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #211717 text on white | 17.50:1 | AAA | Lc 104.3 | Preferred for body text |
| #211717 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EDE8E8
oklch(93.5% 0.005 17.3)
-
Step 200
200
#E0D6D6
oklch(88.4% 0.011 17.4)
-
Step 300
300
#CDBCBC
oklch(80.9% 0.019 17.6)
-
Step 400
400
#B39999
oklch(70.6% 0.031 17.9)
-
Step 500
500
#A08080
oklch(63% 0.04 18.3)
-
Step 600
600
#8B6A6A
oklch(55.7% 0.042 18.5)
-
Step 700
700
#765858
oklch(49.2% 0.04 18.6)
-
Step 800
800
#604848
oklch(42.7% 0.033 18.5)
-
Step 900
900
#4E3C3C
oklch(37.6% 0.025 18.3)
-
Step 950
950 (this color)
#211717
oklch(21.7% 0.016 18.5)
#211717 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) | #191817 | 0.017 |
| Deuteranopia (no green cones) | #1B1A17 | 0.016 |
| Tritanopia (no blue cones) | #231617 | 0.005 |
| Achromatopsia (no color) | #191919 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #211717
#211717
oklch(21.7% 0.016 18.5)
- #111C1D
#111C1D
oklch(21.6% 0.016 203.1)
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 #211717, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.047
- Jet #212529 ΔE 0.051
- Dark #1B2431 ΔE 0.056
- Dark Brown #341C02 ΔE 0.057
- Rich Navy #001219 ΔE 0.067
- Almost Black #070D0D ΔE 0.070
- Oxford Blue #1B263B ΔE 0.073
- Dark Maroon #3C0008 ΔE 0.075
Use #211717 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.