#1B540A
Closest named color: Forest (#0B5509). oklch(39.3% 0.118 139.9), rgb(27, 84, 10).
Aa
White text reads best on this color (9.05:1).
About this color
#1B540A is a dark, moderately saturated green. In OKLCH its lightness is 39%, its chroma 0.118 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest (#0B5509), ΔE 0.009 away. White text reads best on it, at 9.05:1.
| Hue family | Greens |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Forest (#0B5509) |
| Black text | 2.31:1 |
| White text | 9.05:1 |
Values
| HEX | #1B540A |
| RGB | rgb(27, 84, 10) |
| HSL | hsl(106, 79%, 18%) |
| OKLCH | oklch(39.3% 0.118 139.9) |
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 #1B540A | 9.05:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #1B540A | 2.31:1 | Fails | Lc 13.5 | Not readable |
| #1B540A text on white | 9.05:1 | AAA | Lc 90.4 | Preferred for body text |
| #1B540A text on black | 2.31:1 | Fails | Lc -11.8 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EEDE
oklch(93.5% 0.025 139.8)
-
Step 200
200
#C9E2C3
oklch(88.6% 0.05 139.6)
-
Step 300
300
#A3CF99
oklch(80.9% 0.088 139.9)
-
Step 400
400
#6EB65E
oklch(70.8% 0.142 140)
-
Step 500
500
#42A227
oklch(63.1% 0.181 139.8)
-
Step 600
600
#298A00
oklch(55.5% 0.178 139.9)
-
Step 700
700
#217400
oklch(49% 0.157 139.9)
-
Step 800
800
#196000
oklch(42.8% 0.138 140)
-
Step 900
900 (this color)
#1B540A
oklch(39.3% 0.118 139.9)
-
Step 950
950
#0F2F07
oklch(27.1% 0.075 139.9)
#1B540A 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) | #574B00 | 0.080 |
| Deuteranopia (no green cones) | #504713 | 0.079 |
| Tritanopia (no blue cones) | #135147 | 0.080 |
| Achromatopsia (no color) | #494949 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B540A
#1B540A
oklch(39.3% 0.118 139.9)
- #612C6C
#612C6C
oklch(39.3% 0.118 320.5)
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 #1B540A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest #0B5509 ΔE 0.009
- Deep Green #02590F ΔE 0.017
- Navy Green #35530A ΔE 0.026
- Bottle Green #044A05 ΔE 0.038
- Darkgreen #054907 ΔE 0.041
- British Racing Green #05480D ΔE 0.045
- Pine Green #0A481E ΔE 0.050
- Spruce #0A5F38 ΔE 0.051
Use #1B540A 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.