#1B5209
Closest named color: Forest (#0B5509). oklch(38.7% 0.116 139.7), rgb(27, 82, 9).
Aa
White text reads best on this color (9.30:1).
About this color
#1B5209 is a dark, moderately saturated green. In OKLCH its lightness is 39%, its chroma 0.116 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest (#0B5509), ΔE 0.012 away. White text reads best on it, at 9.30:1.
| Hue family | Greens |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Forest (#0B5509) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #1B5209 |
| RGB | rgb(27, 82, 9) |
| HSL | hsl(105, 80%, 18%) |
| OKLCH | oklch(38.7% 0.116 139.7) |
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 #1B5209 | 9.30:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #1B5209 | 2.25:1 | Fails | Lc 12.8 | Not readable |
| #1B5209 text on white | 9.30:1 | AAA | Lc 91.1 | Preferred for body text |
| #1B5209 text on black | 2.25:1 | Fails | Lc -11.2 | 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
#E1EEDE
oklch(93.5% 0.025 139.8)
-
Step 200
200
#C9E1C3
oklch(88.4% 0.048 139.4)
-
Step 300
300
#A3CF99
oklch(80.9% 0.088 139.9)
-
Step 400
400
#6FB55F
oklch(70.6% 0.139 139.9)
-
Step 500
500
#45A22A
oklch(63.2% 0.178 139.7)
-
Step 600
600
#2B8A00
oklch(55.6% 0.178 139.6)
-
Step 700
700
#237400
oklch(49% 0.157 139.6)
-
Step 800
800
#1B5F00
oklch(42.6% 0.136 139.6)
-
Step 900
900 (this color)
#1B5209
oklch(38.7% 0.116 139.7)
-
Step 950
950
#102F07
oklch(27.2% 0.075 139.5)
#1B5209 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) | #554A00 | 0.078 |
| Deuteranopia (no green cones) | #4E4512 | 0.078 |
| Tritanopia (no blue cones) | #144F45 | 0.079 |
| Achromatopsia (no color) | #474747 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5209
#1B5209
oklch(38.7% 0.116 139.7)
- #5E2B6A
#5E2B6A
oklch(38.6% 0.116 319.7)
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 #1B5209, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest #0B5509 ΔE 0.012
- Deep Green #02590F ΔE 0.023
- Navy Green #35530A ΔE 0.028
- Bottle Green #044A05 ΔE 0.032
- Darkgreen #054907 ΔE 0.035
- British Racing Green #05480D ΔE 0.039
- Pine Green #0A481E ΔE 0.044
- Racing Green #014600 ΔE 0.046
Use #1B5209 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.