#187C31
Closest named color: Tree Green (#2A7E19). oklch(51.5% 0.142 147), rgb(24, 124, 49).
Aa
White text reads best on this color (5.29:1).
About this color
#187C31 is a medium-dark, vivid green. In OKLCH its lightness is 51%, its chroma 0.142 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.023 away. White text reads best on it, at 5.29:1.
| Hue family | Greens |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #187C31 |
| RGB | rgb(24, 124, 49) |
| HSL | hsl(135, 68%, 29%) |
| OKLCH | oklch(51.5% 0.142 147) |
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 #187C31 | 5.29:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #187C31 | 3.96:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #187C31 text on white | 5.29:1 | AA | Lc 75.8 | Fine for body text |
| #187C31 text on black | 3.96:1 | AA large text | Lc -25.9 | 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 700.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE2
oklch(93.7% 0.02 145.4)
-
Step 200
200
#C9E0CB
oklch(88.4% 0.038 147.7)
-
Step 300
300
#A4CDA7
oklch(80.9% 0.068 146.8)
-
Step 400
400
#70B378
oklch(70.6% 0.109 147.2)
-
Step 500
500
#45A054
oklch(63.2% 0.141 147)
-
Step 600
600
#1D8A38
oklch(55.6% 0.153 147)
-
Step 700
700 (this color)
#187C31
oklch(51.5% 0.142 147)
-
Step 800
800
#105F24
oklch(42.6% 0.117 147.1)
-
Step 900
900
#184E22
oklch(37.7% 0.092 146.9)
-
Step 950
950
#102E15
oklch(27.1% 0.058 147.2)
#187C31 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) | #7E7029 | 0.111 |
| Deuteranopia (no green cones) | #726837 | 0.110 |
| Tritanopia (no blue cones) | #00796C | 0.085 |
| Achromatopsia (no color) | #6B6B6B | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #187C31
#187C31
oklch(51.5% 0.142 147)
- #904591
#904591
oklch(51.4% 0.142 326.9)
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 #187C31, closest first.
No curated palette has a color within ΔE 0.04 of #187C31.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.023
- Jungle Green #048243 ΔE 0.023
- Dark Grass Green #388004 ΔE 0.036
- Green #008000 ΔE 0.037
- Forest Green #228B22 ΔE 0.052
- Sea Green #2E8B57 ΔE 0.061
- Emerald Green #028F1E ΔE 0.064
- Dark Olive Green #556B2F ΔE 0.069
Use #187C31 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.