#1B5B11
Closest named color: Deep Green (#02590F). oklch(41.5% 0.123 141.2), rgb(27, 91, 17).
Aa
White text reads best on this color (8.23:1).
About this color
#1B5B11 is a dark, moderately saturated green. In OKLCH its lightness is 41%, its chroma 0.123 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 0.014 away. White text reads best on it, at 8.23:1.
| Hue family | Greens |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Deep Green (#02590F) |
| Black text | 2.55:1 |
| White text | 8.23:1 |
Values
| HEX | #1B5B11 |
| RGB | rgb(27, 91, 17) |
| HSL | hsl(112, 69%, 21%) |
| OKLCH | oklch(41.5% 0.123 141.2) |
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 #1B5B11 | 8.23:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #1B5B11 | 2.55:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #1B5B11 text on white | 8.23:1 | AAA | Lc 88.1 | Fine for body text |
| #1B5B11 text on black | 2.55:1 | Fails | Lc -14.1 | 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
#E3EEE1
oklch(93.7% 0.021 140.9)
-
Step 200
200
#CBE0C8
oklch(88.4% 0.039 141.7)
-
Step 300
300
#A7CDA1
oklch(80.9% 0.073 141.3)
-
Step 400
400
#77B36E
oklch(70.8% 0.116 141.2)
-
Step 500
500
#519F45
oklch(63.2% 0.148 141.1)
-
Step 600
600
#318924
oklch(55.6% 0.16 141.3)
-
Step 700
700
#227415
oklch(49.1% 0.149 141.3)
-
Step 800
800 (this color)
#1B5B11
oklch(41.5% 0.123 141.2)
-
Step 900
900
#204E19
oklch(37.8% 0.097 141.1)
-
Step 950
950
#142E10
oklch(27.2% 0.061 141.1)
#1B5B11 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) | #5D5203 | 0.084 |
| Deuteranopia (no green cones) | #564D19 | 0.085 |
| Tritanopia (no blue cones) | #0F584D | 0.081 |
| Achromatopsia (no color) | #4F4F4F | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5B11
#1B5B11
oklch(41.5% 0.123 141.2)
- #693073
#693073
oklch(41.4% 0.123 321.5)
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 #1B5B11, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Green #02590F ΔE 0.014
- Forest #0B5509 ΔE 0.023
- Navy Green #35530A ΔE 0.032
- Dark Green #006400 ΔE 0.033
- Spruce #0A5F38 ΔE 0.040
- Pine #2B5D34 ΔE 0.043
- Army Green #4B5D16 ΔE 0.055
- Camouflage Green #4B6113 ΔE 0.058
Use #1B5B11 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.