#31870A
Closest named color: Forest Green (#228B22). oklch(54.9% 0.169 139.1), rgb(49, 135, 10).
Aa
Black text reads best on this color (4.60:1).
About this color
#31870A is a medium-dark, vivid green. In OKLCH its lightness is 55%, its chroma 0.169 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.014 away. Black text reads best on it, at 4.60:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.60:1 |
| White text | 4.56:1 |
Values
| HEX | #31870A |
| RGB | rgb(49, 135, 10) |
| HSL | hsl(101, 86%, 28%) |
| OKLCH | oklch(54.9% 0.169 139.1) |
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 #31870A | 4.56:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #31870A | 4.60:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #31870A text on white | 4.56:1 | AA | Lc 71.3 | Content text, not long reading |
| #31870A text on black | 4.60:1 | AA | Lc -30.4 | Non-text elements, placeholder text |
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
#E3EEE0
oklch(93.7% 0.022 139)
-
Step 200
200
#CBE0C6
oklch(88.4% 0.042 139.7)
-
Step 300
300
#A8CD9E
oklch(80.9% 0.076 139.1)
-
Step 400
400
#78B367
oklch(70.8% 0.123 138.9)
-
Step 500
500
#529F3B
oklch(63.1% 0.156 139.2)
-
Step 600
600 (this color)
#31870A
oklch(54.9% 0.169 139.1)
-
Step 700
700
#267400
oklch(49.1% 0.155 139.2)
-
Step 800
800
#215F06
oklch(42.8% 0.131 139)
-
Step 900
900
#214E12
oklch(37.8% 0.102 139)
-
Step 950
950
#142E0D
oklch(27.1% 0.065 139.5)
#31870A 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) | #8B7A00 | 0.112 |
| Deuteranopia (no green cones) | #81731E | 0.111 |
| Tritanopia (no blue cones) | #268272 | 0.116 |
| Achromatopsia (no color) | #767676 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31870A
#31870A
oklch(54.9% 0.169 139.1)
- #9A49AF
#9A49AF
oklch(54.9% 0.17 318.9)
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 #31870A, closest first.
No curated palette has a color within ΔE 0.04 of #31870A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.014
- Dark Grass Green #388004 ΔE 0.020
- Emerald Green #028F1E ΔE 0.025
- Tree Green #2A7E19 ΔE 0.031
- Green #008000 ΔE 0.032
- Kelley Green #009337 ΔE 0.038
- True Green #089404 ΔE 0.040
- Irish Green #019529 ΔE 0.040
Use #31870A 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.