#166333
Closest named color: Spruce (#0A5F38). oklch(44.2% 0.106 151.3), rgb(22, 99, 51).
Aa
White text reads best on this color (7.32:1).
About this color
#166333 is a dark, moderately saturated green. In OKLCH its lightness is 44%, its chroma 0.106 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.018 away. White text reads best on it, at 7.32:1.
| Hue family | Greens |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #166333 |
| RGB | rgb(22, 99, 51) |
| HSL | hsl(143, 64%, 24%) |
| OKLCH | oklch(44.2% 0.106 151.3) |
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 #166333 | 7.32:1 | AAA | Lc -90.0 | Fine for body text |
| Black text on #166333 | 2.86:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #166333 text on white | 7.32:1 | AAA | Lc 85.1 | Fine for body text |
| #166333 text on black | 2.86:1 | Fails | Lc -16.9 | 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
#E2EDE4
oklch(93.5% 0.017 151.1)
-
Step 200
200
#C9E0CE
oklch(88.5% 0.035 152)
-
Step 300
300
#A4CDAD
oklch(81% 0.062 151.4)
-
Step 400
400
#70B281
oklch(70.6% 0.099 151.4)
-
Step 500
500
#459F61
oklch(63.2% 0.127 151.3)
-
Step 600
600
#1B8947
oklch(55.5% 0.138 151.4)
-
Step 700
700
#077438
oklch(49% 0.129 151.3)
-
Step 800
800 (this color)
#166333
oklch(44.2% 0.106 151.3)
-
Step 900
900
#184E2A
oklch(37.8% 0.083 151.2)
-
Step 950
950
#102E19
oklch(27.1% 0.053 151.2)
#166333 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) | #635A2F | 0.089 |
| Deuteranopia (no green cones) | #5A5436 | 0.087 |
| Tritanopia (no blue cones) | #006157 | 0.057 |
| Achromatopsia (no color) | #565656 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166333
#166333
oklch(44.2% 0.106 151.3)
- #743A6D
#743A6D
oklch(44.2% 0.107 331.9)
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 #166333, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.018
- Pine #2B5D34 ΔE 0.023
- Dark Green #006400 ΔE 0.047
- Deep Green #02590F ΔE 0.047
- Army Green #4B5D16 ΔE 0.051
- Camouflage Green #4B6113 ΔE 0.052
- Navy Green #35530A ΔE 0.054
- Forest #0B5509 ΔE 0.056
Use #166333 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.