#211521
Closest named color: Rich Black (#0D1B2A). oklch(21.7% 0.029 326.5), rgb(33, 21, 33).
Aa
White text reads best on this color (17.58:1).
About this color
#211521 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 Rich Black (#0D1B2A), ΔE 0.040 away. White text reads best on it, at 17.58:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.58:1 |
Values
| HEX | #211521 |
| RGB | rgb(33, 21, 33) |
| HSL | hsl(300, 22%, 11%) |
| OKLCH | oklch(21.7% 0.029 326.5) |
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 #211521 | 17.58:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #211521 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #211521 text on white | 17.58:1 | AAA | Lc 104.4 | Preferred for body text |
| #211521 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
#F7F4F7
oklch(97% 0.005 325.6)
-
Step 100
100
#EEE8ED
oklch(93.7% 0.009 331)
-
Step 200
200
#E0D5E0
oklch(88.5% 0.019 325.7)
-
Step 300
300
#CDB9CD
oklch(80.9% 0.035 325.9)
-
Step 400
400
#B395B3
oklch(70.7% 0.055 326.1)
-
Step 500
500
#A17BA0
oklch(63.2% 0.07 327.2)
-
Step 600
600
#8B638B
oklch(55.5% 0.077 326.6)
-
Step 700
700
#765276
oklch(49% 0.071 326.6)
-
Step 800
800
#604360
oklch(42.6% 0.06 326.6)
-
Step 900
900
#4F394F
oklch(37.8% 0.047 326.5)
-
Step 950
950 (this color)
#211521
oklch(21.7% 0.029 326.5)
#211521 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) | #141821 | 0.027 |
| Deuteranopia (no green cones) | #171A21 | 0.025 |
| Tritanopia (no blue cones) | #221619 | 0.017 |
| Achromatopsia (no color) | #191919 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #211521
#211521
oklch(21.7% 0.029 326.5)
- #111E12
#111E12
oklch(21.9% 0.03 146.3)
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 #211521, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.040
- Dark #1B2431 ΔE 0.052
- Jet #212529 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.066
- Rich Navy #001219 ΔE 0.067
- Very Dark Purple #2A0134 ΔE 0.070
- Eggplant #380835 ΔE 0.072
- Midnight Purple #280137 ΔE 0.073
Use #211521 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.