#210E18
Closest named color: Rich Black (#0D1B2A). oklch(19.6% 0.036 348.1), rgb(33, 14, 24).
Aa
White text reads best on this color (18.41:1).
About this color
#210E18 is a very dark, muted red. In OKLCH its lightness is 20%, its chroma 0.036 and its hue 348°. Its hue sits on the warm side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.058 away. White text reads best on it, at 18.41:1.
| Hue family | Reds |
| Lightness | very dark (20%) |
| Chroma | muted (0.036) |
| Temperature | warm |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.41:1 |
Values
| HEX | #210E18 |
| RGB | rgb(33, 14, 24) |
| HSL | hsl(328, 40%, 9%) |
| OKLCH | oklch(19.6% 0.036 348.1) |
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 #210E18 | 18.41:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #210E18 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #210E18 text on white | 18.41:1 | AAA | Lc 104.9 | Preferred for body text |
| #210E18 text on black | 1.14:1 | 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
#F9F4F6
oklch(97.2% 0.006 350.8)
-
Step 100
100
#F1E7EB
oklch(93.7% 0.012 351)
-
Step 200
200
#E6D3DC
oklch(88.5% 0.024 347.2)
-
Step 300
300
#D7B6C5
oklch(80.9% 0.043 349)
-
Step 400
400
#C28FA8
oklch(70.7% 0.07 348.1)
-
Step 500
500
#B17393
oklch(63% 0.088 347.7)
-
Step 600
600
#9C5B7D
oklch(55.6% 0.096 348)
-
Step 700
700
#854B69
oklch(49.1% 0.088 348.5)
-
Step 800
800
#6C3E56
oklch(42.7% 0.072 348)
-
Step 900
900
#583547
oklch(37.8% 0.057 348)
-
Step 950
950 (this color)
#210E18
oklch(19.6% 0.036 348.1)
#210E18 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) | #101218 | 0.038 |
| Deuteranopia (no green cones) | #151518 | 0.034 |
| Tritanopia (no blue cones) | #230E12 | 0.013 |
| Achromatopsia (no color) | #141414 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #210E18
#210E18
oklch(19.6% 0.036 348.1)
- #021A12
#021A12
oklch(19.5% 0.036 168.7)
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 #210E18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.058
- Very Dark Brown #1D0200 ΔE 0.060
- Almost Black #070D0D ΔE 0.063
- Rich Navy #001219 ΔE 0.066
- Dark Maroon #3C0008 ΔE 0.069
- Very Dark Purple #2A0134 ΔE 0.071
- Midnight Purple #280137 ΔE 0.075
- Jet #212529 ΔE 0.076
Use #210E18 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.