#121C0B
Closest named color: Rich Black (#0D1B2A). oklch(21.1% 0.035 133.5), rgb(18, 28, 11).
Aa
White text reads best on this color (17.54:1).
About this color
#121C0B is a very dark, muted green. In OKLCH its lightness is 21%, its chroma 0.035 and its hue 133°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.061 away. White text reads best on it, at 17.54:1.
| Hue family | Greens |
| Lightness | very dark (21%) |
| Chroma | muted (0.035) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.54:1 |
Values
| HEX | #121C0B |
| RGB | rgb(18, 28, 11) |
| HSL | hsl(95, 44%, 8%) |
| OKLCH | oklch(21.1% 0.035 133.5) |
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 #121C0B | 17.54:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #121C0B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #121C0B text on white | 17.54:1 | AAA | Lc 104.3 | Preferred for body text |
| #121C0B 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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E7ECE4
oklch(93.7% 0.012 133.4)
-
Step 200
200
#D3DDCD
oklch(88.5% 0.024 133.5)
-
Step 300
300
#B6C7AC
oklch(80.9% 0.042 133.8)
-
Step 400
400
#90AA80
oklch(70.7% 0.066 133.8)
-
Step 500
500
#759560
oklch(63.2% 0.084 133.6)
-
Step 600
600
#5D7F46
oklch(55.6% 0.092 133.7)
-
Step 700
700
#4D6B37
oklch(49.1% 0.085 133.3)
-
Step 800
800
#3F572E
oklch(42.6% 0.07 133.4)
-
Step 900
900
#364829
oklch(37.7% 0.055 133)
-
Step 950
950 (this color)
#121C0B
oklch(21.1% 0.035 133.5)
#121C0B 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) | #1D1A0A | 0.020 |
| Deuteranopia (no green cones) | #1C190C | 0.021 |
| Tritanopia (no blue cones) | #121B18 | 0.025 |
| Achromatopsia (no color) | #191919 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121C0B
#121C0B
oklch(21.1% 0.035 133.5)
- #1E1424
#1E1424
oklch(21.2% 0.034 312.2)
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 #121C0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.061
- Rich Navy #001219 ΔE 0.063
- Jet #212529 ΔE 0.064
- Almost Black #070D0D ΔE 0.067
- Dark Brown #341C02 ΔE 0.068
- Dark Forest Green #002D04 ΔE 0.068
- Very Dark Green #062E03 ΔE 0.071
- Dark #1B2431 ΔE 0.072
Use #121C0B 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.