#1F581C
Closest named color: Deep Green (#02590F). oklch(40.8% 0.109 142.5), rgb(31, 88, 28).
Aa
White text reads best on this color (8.49:1).
About this color
#1F581C is a dark, moderately saturated green. In OKLCH its lightness is 41%, its chroma 0.109 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Deep Green (#02590F), ΔE 0.021 away. White text reads best on it, at 8.49:1.
| Hue family | Greens |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Deep Green (#02590F) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #1F581C |
| RGB | rgb(31, 88, 28) |
| HSL | hsl(117, 52%, 23%) |
| OKLCH | oklch(40.8% 0.109 142.5) |
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 #1F581C | 8.49:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #1F581C | 2.47:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #1F581C text on white | 8.49:1 | AAA | Lc 88.9 | Fine for body text |
| #1F581C text on black | 2.47:1 | Fails | Lc -13.3 | Not readable |
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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E3EDE2
oklch(93.6% 0.018 142.8)
-
Step 200
200
#CCE0CA
oklch(88.6% 0.037 142.7)
-
Step 300
300
#A9CCA6
oklch(80.9% 0.065 142.9)
-
Step 400
400
#7BB176
oklch(70.7% 0.102 142.4)
-
Step 500
500
#569D51
oklch(63.1% 0.131 142.5)
-
Step 600
600
#398734
oklch(55.5% 0.142 142.4)
-
Step 700
700
#2A7226
oklch(48.9% 0.132 142.4)
-
Step 800
800 (this color)
#1F581C
oklch(40.8% 0.109 142.5)
-
Step 900
900
#234D21
oklch(37.8% 0.086 142.8)
-
Step 950
950
#162D14
oklch(27% 0.053 142.3)
#1F581C 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) | #5A5015 | 0.077 |
| Deuteranopia (no green cones) | #534B21 | 0.078 |
| Tritanopia (no blue cones) | #15554B | 0.070 |
| Achromatopsia (no color) | #4D4D4D | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F581C
#1F581C
oklch(40.8% 0.109 142.5)
- #65326C
#65326C
oklch(40.8% 0.11 322.7)
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 #1F581C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Green #02590F ΔE 0.021
- Forest #0B5509 ΔE 0.023
- Navy Green #35530A ΔE 0.024
- Spruce #0A5F38 ΔE 0.034
- Pine #2B5D34 ΔE 0.034
- Dark Green #006400 ΔE 0.048
- Bottle Green #044A05 ΔE 0.053
- Army Green #4B5D16 ΔE 0.055
Use #1F581C 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.