#1B580F
Closest named color: Deep Green (#02590F). oklch(40.6% 0.121 140.8), rgb(27, 88, 15).
Aa
White text reads best on this color (8.57:1).
About this color
#1B580F is a dark, moderately saturated green. In OKLCH its lightness is 41%, its chroma 0.121 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Deep Green (#02590F), ΔE 0.011 away. White text reads best on it, at 8.57:1.
| Hue family | Greens |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Deep Green (#02590F) |
| Black text | 2.44:1 |
| White text | 8.57:1 |
Values
| HEX | #1B580F |
| RGB | rgb(27, 88, 15) |
| HSL | hsl(110, 71%, 20%) |
| OKLCH | oklch(40.6% 0.121 140.8) |
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 #1B580F | 8.57:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #1B580F | 2.44:1 | Fails | Lc 14.9 | Not readable |
| #1B580F text on white | 8.57:1 | AAA | Lc 89.1 | Fine for body text |
| #1B580F text on black | 2.44:1 | Fails | Lc -13.1 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E3EDE1
oklch(93.5% 0.019 140.5)
-
Step 200
200
#CCE0C8
oklch(88.5% 0.039 140.5)
-
Step 300
300
#A8CCA2
oklch(80.8% 0.07 141.1)
-
Step 400
400
#79B26F
oklch(70.7% 0.112 140.8)
-
Step 500
500
#539E47
oklch(63% 0.144 141)
-
Step 600
600
#358825
oklch(55.5% 0.156 140.7)
-
Step 700
700
#267317
oklch(49% 0.145 140.8)
-
Step 800
800 (this color)
#1B580F
oklch(40.6% 0.121 140.8)
-
Step 900
900
#224D1A
oklch(37.7% 0.093 140.6)
-
Step 950
950
#152D10
oklch(26.9% 0.059 140.2)
#1B580F 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) | #5A4F01 | 0.081 |
| Deuteranopia (no green cones) | #534A17 | 0.082 |
| Tritanopia (no blue cones) | #11554A | 0.080 |
| Achromatopsia (no color) | #4C4C4C | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B580F
#1B580F
oklch(40.6% 0.121 140.8)
- #652F70
#652F70
oklch(40.6% 0.12 320.6)
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 #1B580F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Green #02590F ΔE 0.011
- Forest #0B5509 ΔE 0.015
- Navy Green #35530A ΔE 0.027
- Dark Green #006400 ΔE 0.041
- Spruce #0A5F38 ΔE 0.043
- Pine #2B5D34 ΔE 0.045
- Bottle Green #044A05 ΔE 0.050
- Darkgreen #054907 ΔE 0.053
Use #1B580F 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.