#066644
Closest named color: Spruce (#0A5F38). oklch(45.2% 0.098 161.5), rgb(6, 102, 68).
Aa
White text reads best on this color (7.01:1).
About this color
#066644 is a medium-dark, moderately saturated green. In OKLCH its lightness is 45%, its chroma 0.098 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.025 away. White text reads best on it, at 7.01:1.
| Hue family | Greens |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #066644 |
| RGB | rgb(6, 102, 68) |
| HSL | hsl(159, 89%, 21%) |
| OKLCH | oklch(45.2% 0.098 161.5) |
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 #066644 | 7.01:1 | AAA | Lc -88.8 | Fine for body text |
| Black text on #066644 | 2.99:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #066644 text on white | 7.01:1 | AAA | Lc 83.8 | Fine for body text |
| #066644 text on black | 2.99:1 | Fails | Lc -18.1 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E1EDE6
oklch(93.5% 0.016 160.6)
-
Step 200
200
#C8E0D3
oklch(88.5% 0.031 162.1)
-
Step 300
300
#A0CDB5
oklch(81% 0.058 161.5)
-
Step 400
400
#69B38F
oklch(70.8% 0.092 161.7)
-
Step 500
500
#389F73
oklch(63.1% 0.116 161.6)
-
Step 600
600
#00895C
oklch(55.7% 0.123 161.5)
-
Step 700
700
#00734D
oklch(49.1% 0.108 161.8)
-
Step 800
800 (this color)
#066644
oklch(45.2% 0.098 161.5)
-
Step 900
900
#0E4E34
oklch(37.8% 0.077 160.9)
-
Step 950
950
#0C2E1F
oklch(27.1% 0.049 161.3)
#066644 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) | #645D42 | 0.093 |
| Deuteranopia (no green cones) | #5A5646 | 0.090 |
| Tritanopia (no blue cones) | #00665D | 0.040 |
| Achromatopsia (no color) | #595959 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066644
#066644
oklch(45.2% 0.098 161.5)
- #793E65
#793E65
oklch(45.1% 0.097 341.6)
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 #066644, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.025
- Pine #2B5D34 ΔE 0.032
- Dark Green Blue #1F6357 ΔE 0.038
- Dark Aqua #05696B ΔE 0.061
- Army Green #4B5D16 ΔE 0.064
- Camouflage Green #4B6113 ΔE 0.065
- Dark Green #006400 ΔE 0.066
- Camo Green #526525 ΔE 0.066
Use #066644 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.