#166737
Closest named color: Spruce (#0A5F38). oklch(45.4% 0.108 152.2), rgb(22, 103, 55).
Aa
White text reads best on this color (6.93:1).
About this color
#166737 is a medium-dark, moderately saturated green. In OKLCH its lightness is 45%, its chroma 0.108 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.028 away. White text reads best on it, at 6.93:1.
| Hue family | Greens |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #166737 |
| RGB | rgb(22, 103, 55) |
| HSL | hsl(144, 65%, 25%) |
| OKLCH | oklch(45.4% 0.108 152.2) |
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 #166737 | 6.93:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #166737 | 3.02:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #166737 text on white | 6.93:1 | AA | Lc 83.6 | Fine for body text |
| #166737 text on black | 3.02:1 | AA large text | Lc -18.4 | 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
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E1EEE4
oklch(93.7% 0.019 152.8)
-
Step 200
200
#C9E0CE
oklch(88.5% 0.035 152)
-
Step 300
300
#A3CDAD
oklch(80.9% 0.063 152.1)
-
Step 400
400
#6EB381
oklch(70.7% 0.102 151.9)
-
Step 500
500
#419F62
oklch(63% 0.128 152.4)
-
Step 600
600
#118A48
oklch(55.7% 0.141 152.2)
-
Step 700
700
#00743A
oklch(49% 0.128 152.4)
-
Step 800
800 (this color)
#166737
oklch(45.4% 0.108 152.2)
-
Step 900
900
#154E2A
oklch(37.7% 0.085 151.9)
-
Step 950
950
#0F2E19
oklch(27.1% 0.054 151.7)
#166737 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) | #675E33 | 0.092 |
| Deuteranopia (no green cones) | #5E573A | 0.091 |
| Tritanopia (no blue cones) | #00655B | 0.057 |
| Achromatopsia (no color) | #5A5A5A | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166737
#166737
oklch(45.4% 0.108 152.2)
- #783D71
#783D71
oklch(45.4% 0.108 331.8)
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 #166737, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.028
- Pine #2B5D34 ΔE 0.032
- Dark Green #006400 ΔE 0.049
- Camouflage Green #4B6113 ΔE 0.051
- Army Green #4B5D16 ΔE 0.054
- Dark Green Blue #1F6357 ΔE 0.055
- Camo Green #526525 ΔE 0.056
- Deep Green #02590F ΔE 0.058
Use #166737 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.