#166C42
Closest named color: Spruce (#0A5F38). oklch(47.1% 0.104 156.4), rgb(22, 108, 66).
Aa
White text reads best on this color (6.44:1).
About this color
#166C42 is a medium-dark, moderately saturated green. In OKLCH its lightness is 47%, its chroma 0.104 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.043 away. White text reads best on it, at 6.44:1.
| Hue family | Greens |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 3.25:1 |
| White text | 6.44:1 |
Values
| HEX | #166C42 |
| RGB | rgb(22, 108, 66) |
| HSL | hsl(151, 66%, 25%) |
| OKLCH | oklch(47.1% 0.104 156.4) |
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 #166C42 | 6.44:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #166C42 | 3.25:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #166C42 text on white | 6.44:1 | AA | Lc 81.6 | Fine for body text |
| #166C42 text on black | 3.25:1 | AA large text | Lc -20.3 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CBDFD2
oklch(88.5% 0.028 157.3)
-
Step 300
300
#A7CBB3
oklch(80.9% 0.051 155.9)
-
Step 400
400
#76B08C
oklch(70.7% 0.081 156.4)
-
Step 500
500
#4F9C6F
oklch(63.1% 0.103 156.2)
-
Step 600
600
#2D8657
oklch(55.5% 0.112 156.4)
-
Step 700
700 (this color)
#166C42
oklch(47.1% 0.104 156.4)
-
Step 800
800
#1C5D3B
oklch(42.8% 0.087 156.5)
-
Step 900
900
#1E4C33
oklch(37.7% 0.067 157.1)
-
Step 950
950
#132D1E
oklch(27.1% 0.043 156.6)
#166C42 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) | #6B633F | 0.093 |
| Deuteranopia (no green cones) | #615B45 | 0.093 |
| Tritanopia (no blue cones) | #006B61 | 0.049 |
| Achromatopsia (no color) | #5E5E5E | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166C42
#166C42
oklch(47.1% 0.104 156.4)
- #7F4271
#7F4271
oklch(47.1% 0.105 336.4)
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 #166C42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.043
- Pine #2B5D34 ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.051
- Camo Green #526525 ΔE 0.057
- Dark Olive Green #556B2F ΔE 0.058
- Camouflage Green #4B6113 ΔE 0.059
- Army Green #4B5D16 ΔE 0.063
- Dark Green #006400 ΔE 0.064
Use #166C42 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.