#166F40
Closest named color: Spruce (#0A5F38). oklch(47.9% 0.11 154.5), rgb(22, 111, 64).
Aa
White text reads best on this color (6.20:1).
About this color
#166F40 is a medium-dark, moderately saturated green. In OKLCH its lightness is 48%, its chroma 0.110 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.052 away. White text reads best on it, at 6.20:1.
| Hue family | Greens |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 3.38:1 |
| White text | 6.20:1 |
Values
| HEX | #166F40 |
| RGB | rgb(22, 111, 64) |
| HSL | hsl(148, 67%, 26%) |
| OKLCH | oklch(47.9% 0.11 154.5) |
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 #166F40 | 6.20:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #166F40 | 3.38:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #166F40 text on white | 6.20:1 | AA | Lc 80.6 | Fine for body text |
| #166F40 text on black | 3.38:1 | AA large text | Lc -21.3 | 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 700.
-
Step 50
50
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#CBDFD0
oklch(88.5% 0.029 153.3)
-
Step 300
300
#A6CBB1
oklch(80.8% 0.054 154.4)
-
Step 400
400
#75B189
oklch(70.8% 0.086 154.5)
-
Step 500
500
#4D9D6B
oklch(63.2% 0.11 154.3)
-
Step 600
600
#2A8753
oklch(55.6% 0.119 154.7)
-
Step 700
700 (this color)
#166F40
oklch(47.9% 0.11 154.5)
-
Step 800
800
#1A5D38
oklch(42.6% 0.091 154.9)
-
Step 900
900
#1D4C30
oklch(37.5% 0.071 154.7)
-
Step 950
950
#122D1C
oklch(27% 0.046 154.3)
#166F40 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) | #6F653D | 0.098 |
| Deuteranopia (no green cones) | #645E43 | 0.095 |
| Tritanopia (no blue cones) | #006E63 | 0.054 |
| Achromatopsia (no color) | #616161 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166F40
#166F40
oklch(47.9% 0.11 154.5)
- #824376
#824376
oklch(47.9% 0.11 334.7)
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 #166F40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.052
- Pine #2B5D34 ΔE 0.054
- Dark Olive Green #556B2F ΔE 0.055
- Camo Green #526525 ΔE 0.057
- Jungle Green #048243 ΔE 0.059
- Camouflage Green #4B6113 ΔE 0.060
- Dark Green Blue #1F6357 ΔE 0.061
- Dark Green #006400 ΔE 0.064
Use #166F40 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.