#00511B
Closest named color: Forest (#0B5509). oklch(37.9% 0.111 147.7), rgb(0, 81, 27).
Aa
White text reads best on this color (9.57:1).
About this color
#00511B is a dark, moderately saturated green. In OKLCH its lightness is 38%, its chroma 0.111 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest (#0B5509), ΔE 0.022 away. White text reads best on it, at 9.57:1.
| Hue family | Greens |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Forest (#0B5509) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #00511B |
| RGB | rgb(0, 81, 27) |
| HSL | hsl(140, 100%, 16%) |
| OKLCH | oklch(37.9% 0.111 147.7) |
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 #00511B | 9.57:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #00511B | 2.19:1 | Fails | Lc 12.4 | Not readable |
| #00511B text on white | 9.57:1 | AAA | Lc 91.6 | Preferred for body text |
| #00511B text on black | 2.19:1 | Fails | Lc -10.8 | 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 900.
-
Step 50
50
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E0EFE1
oklch(93.7% 0.024 147.3)
-
Step 200
200
#C6E2C8
oklch(88.5% 0.046 147.2)
-
Step 300
300
#9DD0A2
oklch(81% 0.083 147.3)
-
Step 400
400
#61B76F
oklch(70.7% 0.134 147.7)
-
Step 500
500
#25A447
oklch(63.2% 0.17 147.6)
-
Step 600
600
#008B34
oklch(55.5% 0.162 147.6)
-
Step 700
700
#00752B
oklch(49% 0.143 147.8)
-
Step 800
800
#006022
oklch(42.6% 0.124 147.8)
-
Step 900
900 (this color)
#00511B
oklch(37.9% 0.111 147.7)
-
Step 950
950
#072F11
oklch(26.9% 0.069 147.9)
#00511B 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) | #524915 | 0.086 |
| Deuteranopia (no green cones) | #4A4320 | 0.086 |
| Tritanopia (no blue cones) | #004F45 | 0.065 |
| Achromatopsia (no color) | #454545 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00511B
#00511B
oklch(37.9% 0.111 147.7)
- #602860
#602860
oklch(37.9% 0.112 327.5)
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 #00511B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest #0B5509 ΔE 0.022
- Bottle Green #044A05 ΔE 0.026
- Darkgreen #054907 ΔE 0.028
- British Racing Green #05480D ΔE 0.030
- Deep Green #02590F ΔE 0.031
- Pine Green #0A481E ΔE 0.032
- Racing Green #014600 ΔE 0.039
- Navy Green #35530A ΔE 0.041
Use #00511B 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.