#1B831D
Closest named color: Tree Green (#2A7E19). oklch(53.3% 0.164 143), rgb(27, 131, 29).
Aa
White text reads best on this color (4.87:1).
About this color
#1B831D is a medium-dark, vivid green. In OKLCH its lightness is 53%, its chroma 0.164 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.015 away. White text reads best on it, at 4.87:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 4.31:1 |
| White text | 4.87:1 |
Values
| HEX | #1B831D |
| RGB | rgb(27, 131, 29) |
| HSL | hsl(121, 66%, 31%) |
| OKLCH | oklch(53.3% 0.164 143) |
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 #1B831D | 4.87:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #1B831D | 4.31:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #1B831D text on white | 4.87:1 | AA | Lc 73.2 | Content text, not long reading |
| #1B831D text on black | 4.31:1 | AA large text | Lc -28.5 | Dividers and decoration only |
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 600.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE1C8
oklch(88.6% 0.042 143)
-
Step 300
300
#A5CDA2
oklch(80.8% 0.073 143.1)
-
Step 400
400
#72B36F
oklch(70.6% 0.118 143.2)
-
Step 500
500
#49A047
oklch(63.1% 0.151 143.1)
-
Step 600
600 (this color)
#1B831D
oklch(53.3% 0.164 143)
-
Step 700
700
#157517
oklch(49.1% 0.153 143)
-
Step 800
800
#165F17
oklch(42.6% 0.126 143.1)
-
Step 900
900
#1B4E1A
oklch(37.6% 0.098 143)
-
Step 950
950
#112E10
oklch(27% 0.063 143)
#1B831D 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) | #867606 | 0.117 |
| Deuteranopia (no green cones) | #7B6E28 | 0.118 |
| Tritanopia (no blue cones) | #007F70 | 0.106 |
| Achromatopsia (no color) | #717171 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B831D
#1B831D
oklch(53.3% 0.164 143)
- #9844A3
#9844A3
oklch(53.3% 0.165 322.9)
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 #1B831D, closest first.
No curated palette has a color within ΔE 0.04 of #1B831D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.015
- Dark Grass Green #388004 ΔE 0.017
- Green #008000 ΔE 0.018
- Forest Green #228B22 ΔE 0.025
- Emerald Green #028F1E ΔE 0.036
- Jungle Green #048243 ΔE 0.037
- Kelley Green #009337 ΔE 0.047
- Irish Green #019529 ΔE 0.053
Use #1B831D 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.