#166B4C
Closest named color: Dark Green Blue (#1F6357). oklch(47.1% 0.093 163.3), rgb(22, 107, 76).
Aa
White text reads best on this color (6.47:1).
About this color
#166B4C is a medium-dark, moderately saturated green. In OKLCH its lightness is 47%, its chroma 0.093 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.036 away. White text reads best on it, at 6.47:1.
| Hue family | Greens |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.24:1 |
| White text | 6.47:1 |
Values
| HEX | #166B4C |
| RGB | rgb(22, 107, 76) |
| HSL | hsl(158, 66%, 25%) |
| OKLCH | oklch(47.1% 0.093 163.3) |
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 #166B4C | 6.47:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #166B4C | 3.24:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #166B4C text on white | 6.47:1 | AA | Lc 81.8 | Fine for body text |
| #166B4C text on black | 3.24:1 | AA large text | Lc -20.1 | 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 700.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CBDFD4
oklch(88.6% 0.026 161.9)
-
Step 300
300
#A7CAB8
oklch(80.8% 0.045 162.9)
-
Step 400
400
#76AF94
oklch(70.7% 0.072 163.4)
-
Step 500
500
#4F9B7A
oklch(63.1% 0.092 163.5)
-
Step 600
600
#2E8563
oklch(55.5% 0.099 163.7)
-
Step 700
700 (this color)
#166B4C
oklch(47.1% 0.093 163.3)
-
Step 800
800
#1D5C43
oklch(42.7% 0.077 163.3)
-
Step 900
900
#1F4C38
oklch(37.8% 0.061 162.2)
-
Step 950
950
#132C21
oklch(26.9% 0.038 163.5)
#166B4C 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) | #69634A | 0.090 |
| Deuteranopia (no green cones) | #5E5B4E | 0.087 |
| Tritanopia (no blue cones) | #006B63 | 0.036 |
| Achromatopsia (no color) | #5E5E5E | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166B4C
#166B4C
oklch(47.1% 0.093 163.3)
- #7F4468
#7F4468
oklch(47.1% 0.094 343.9)
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 #166B4C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.036
- Spruce #0A5F38 ΔE 0.044
- Pine #2B5D34 ΔE 0.046
- Dark Aqua #05696B ΔE 0.052
- Dark Aquamarine #017371 ΔE 0.056
- Deep Turquoise #017374 ΔE 0.060
- Camo Green #526525 ΔE 0.063
- Dark Olive Green #556B2F ΔE 0.063
Use #166B4C 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.