#1B5000
Closest named color: Forest (#0B5509). oklch(38% 0.118 138.4), rgb(27, 80, 0).
Aa
White text reads best on this color (9.57:1).
About this color
#1B5000 is a dark, moderately saturated green. In OKLCH its lightness is 38%, its chroma 0.118 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest (#0B5509), ΔE 0.016 away. White text reads best on it, at 9.57:1.
| Hue family | Greens |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Forest (#0B5509) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #1B5000 |
| RGB | rgb(27, 80, 0) |
| HSL | hsl(100, 100%, 16%) |
| OKLCH | oklch(38% 0.118 138.4) |
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 #1B5000 | 9.57:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #1B5000 | 2.19:1 | Fails | Lc 12.2 | Not readable |
| #1B5000 text on white | 9.57:1 | AAA | Lc 91.8 | Preferred for body text |
| #1B5000 text on black | 2.19:1 | Fails | Lc -10.6 | 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 900.
-
Step 50
50
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E2EEDE
oklch(93.6% 0.025 137.8)
-
Step 200
200
#C9E1C2
oklch(88.4% 0.049 138.6)
-
Step 300
300
#A4CF97
oklch(80.9% 0.089 138.5)
-
Step 400
400
#71B55B
oklch(70.7% 0.142 138.5)
-
Step 500
500
#48A120
oklch(63% 0.181 138.3)
-
Step 600
600
#348900
oklch(55.6% 0.173 138.4)
-
Step 700
700
#2A7300
oklch(49% 0.153 138.4)
-
Step 800
800
#215F00
oklch(42.8% 0.134 138.5)
-
Step 900
900 (this color)
#1B5000
oklch(38% 0.118 138.4)
-
Step 950
950
#112E05
oklch(26.9% 0.075 138)
#1B5000 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) | #534800 | 0.078 |
| Deuteranopia (no green cones) | #4C440B | 0.075 |
| Tritanopia (no blue cones) | #154D43 | 0.082 |
| Achromatopsia (no color) | #454545 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5000
#1B5000
oklch(38% 0.118 138.4)
- #5C296A
#5C296A
oklch(38.1% 0.118 318.5)
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 #1B5000, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest #0B5509 ΔE 0.016
- Bottle Green #044A05 ΔE 0.026
- Deep Green #02590F ΔE 0.028
- Darkgreen #054907 ΔE 0.029
- Navy Green #35530A ΔE 0.032
- British Racing Green #05480D ΔE 0.034
- Racing Green #014600 ΔE 0.040
- Pine Green #0A481E ΔE 0.042
Use #1B5000 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.