#066304
Closest named color: Dark Green (#006400). oklch(43.4% 0.144 142.4), rgb(6, 99, 4).
Aa
White text reads best on this color (7.51:1).
About this color
#066304 is a dark, vivid green. In OKLCH its lightness is 43%, its chroma 0.144 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green (#006400), ΔE 0.004 away. White text reads best on it, at 7.51:1.
| Hue family | Greens |
| Lightness | dark (43%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Dark Green (#006400) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #066304 |
| RGB | rgb(6, 99, 4) |
| HSL | hsl(119, 92%, 20%) |
| OKLCH | oklch(43.4% 0.144 142.4) |
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 #066304 | 7.51:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #066304 | 2.79:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #066304 text on white | 7.51:1 | AAA | Lc 85.5 | Fine for body text |
| #066304 text on black | 2.79:1 | Fails | Lc -16.5 | Dividers and decoration only |
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 800.
-
Step 50
50
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C8E2C5
oklch(88.6% 0.048 142.3)
-
Step 300
300
#A1CF9D
oklch(80.9% 0.084 142.7)
-
Step 400
400
#6CB666
oklch(70.8% 0.135 142.4)
-
Step 500
500
#3DA237
oklch(63% 0.173 142.4)
-
Step 600
600
#068C03
oklch(55.5% 0.187 142.4)
-
Step 700
700
#027600
oklch(49% 0.167 142.4)
-
Step 800
800 (this color)
#066304
oklch(43.4% 0.144 142.4)
-
Step 900
900
#124F10
oklch(37.5% 0.112 142.6)
-
Step 950
950
#0D2F0B
oklch(27.1% 0.072 142.4)
#066304 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) | #655800 | 0.102 |
| Deuteranopia (no green cones) | #5C5213 | 0.101 |
| Tritanopia (no blue cones) | #006053 | 0.094 |
| Achromatopsia (no color) | #545454 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066304
#066304
oklch(43.4% 0.144 142.4)
- #742E7E
#742E7E
oklch(43.4% 0.144 322.5)
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 #066304, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green #006400 ΔE 0.004
- Deep Green #02590F ΔE 0.035
- Forest #0B5509 ΔE 0.046
- Spruce #0A5F38 ΔE 0.054
- Navy Green #35530A ΔE 0.058
- Pine #2B5D34 ΔE 0.059
- Camouflage Green #4B6113 ΔE 0.061
- Army Green #4B5D16 ΔE 0.064
Use #066304 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.