#166440
Closest named color: Spruce (#0A5F38). oklch(44.8% 0.095 158.1), rgb(22, 100, 64).
Aa
White text reads best on this color (7.16:1).
About this color
#166440 is a dark, moderately saturated green. In OKLCH its lightness is 45%, its chroma 0.095 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.020 away. White text reads best on it, at 7.16:1.
| Hue family | Greens |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #166440 |
| RGB | rgb(22, 100, 64) |
| HSL | hsl(152, 64%, 24%) |
| OKLCH | oklch(44.8% 0.095 158.1) |
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 #166440 | 7.16:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #166440 | 2.93:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #166440 text on white | 7.16:1 | AAA | Lc 84.5 | Fine for body text |
| #166440 text on black | 2.93:1 | Fails | Lc -17.5 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#C9E0D2
oklch(88.6% 0.031 159)
-
Step 300
300
#A3CCB3
oklch(80.9% 0.056 158.1)
-
Step 400
400
#6FB28C
oklch(70.8% 0.089 158.2)
-
Step 500
500
#439E6F
oklch(63.1% 0.113 158.1)
-
Step 600
600
#178857
oklch(55.5% 0.122 158.3)
-
Step 700
700
#017347
oklch(49% 0.114 158.3)
-
Step 800
800 (this color)
#166440
oklch(44.8% 0.095 158.1)
-
Step 900
900
#164D32
oklch(37.6% 0.074 158.1)
-
Step 950
950
#0F2D1E
oklch(26.9% 0.046 159.2)
#166440 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) | #635C3E | 0.087 |
| Deuteranopia (no green cones) | #595542 | 0.084 |
| Tritanopia (no blue cones) | #00635B | 0.043 |
| Achromatopsia (no color) | #585858 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166440
#166440
oklch(44.8% 0.095 158.1)
- #763E67
#763E67
oklch(44.8% 0.096 338)
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 #166440, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.020
- Pine #2B5D34 ΔE 0.024
- Dark Green Blue #1F6357 ΔE 0.039
- Army Green #4B5D16 ΔE 0.058
- Camouflage Green #4B6113 ΔE 0.059
- Camo Green #526525 ΔE 0.062
- Deep Green #02590F ΔE 0.062
- Dark Green #006400 ΔE 0.064
Use #166440 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.