#1B5B2D
Closest named color: Spruce (#0A5F38). oklch(41.8% 0.099 149.2), rgb(27, 91, 45).
Aa
White text reads best on this color (8.13:1).
About this color
#1B5B2D is a dark, moderately saturated green. In OKLCH its lightness is 42%, its chroma 0.099 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.016 away. White text reads best on it, at 8.13:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.58:1 |
| White text | 8.13:1 |
Values
| HEX | #1B5B2D |
| RGB | rgb(27, 91, 45) |
| HSL | hsl(137, 54%, 23%) |
| OKLCH | oklch(41.8% 0.099 149.2) |
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 #1B5B2D | 8.13:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #1B5B2D | 2.58:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #1B5B2D text on white | 8.13:1 | AAA | Lc 87.8 | Fine for body text |
| #1B5B2D text on black | 2.58:1 | Fails | Lc -14.3 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE4
oklch(93.6% 0.016 148.4)
-
Step 200
200
#CBDFCE
oklch(88.4% 0.031 149.8)
-
Step 300
300
#A7CCAD
oklch(81% 0.058 149.6)
-
Step 400
400
#77B181
oklch(70.7% 0.092 149)
-
Step 500
500
#509D61
oklch(63.1% 0.118 149.2)
-
Step 600
600
#2F8747
oklch(55.5% 0.128 149.2)
-
Step 700
700
#217339
oklch(49.2% 0.119 149.3)
-
Step 800
800 (this color)
#1B5B2D
oklch(41.8% 0.099 149.2)
-
Step 900
900
#1F4D2A
oklch(37.8% 0.078 149.2)
-
Step 950
950
#132D19
oklch(27% 0.049 149.6)
#1B5B2D 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) | #5C5329 | 0.081 |
| Deuteranopia (no green cones) | #544D30 | 0.080 |
| Tritanopia (no blue cones) | #035950 | 0.056 |
| Achromatopsia (no color) | #4F4F4F | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5B2D
#1B5B2D
oklch(41.8% 0.099 149.2)
- #693767
#693767
oklch(41.9% 0.098 328.6)
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 #1B5B2D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.016
- Pine #2B5D34 ΔE 0.019
- Deep Green #02590F ΔE 0.035
- Navy Green #35530A ΔE 0.036
- Forest #0B5509 ΔE 0.040
- Army Green #4B5D16 ΔE 0.054
- Dark Green #006400 ΔE 0.054
- Camouflage Green #4B6113 ΔE 0.059
Use #1B5B2D 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.