#21870A
Closest named color: Forest Green (#228B22). oklch(54.5% 0.175 141.1), rgb(33, 135, 10).
Aa
White text reads best on this color (4.63:1).
About this color
#21870A is a medium-dark, vivid green. In OKLCH its lightness is 54%, its chroma 0.175 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.015 away. White text reads best on it, at 4.63:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.175) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.53:1 |
| White text | 4.63:1 |
Values
| HEX | #21870A |
| RGB | rgb(33, 135, 10) |
| HSL | hsl(109, 86%, 28%) |
| OKLCH | oklch(54.5% 0.175 141.1) |
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 #21870A | 4.63:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #21870A | 4.53:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #21870A text on white | 4.63:1 | AA | Lc 71.6 | Content text, not long reading |
| #21870A text on black | 4.53:1 | AA | Lc -30.1 | 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
#E2EEE0
oklch(93.6% 0.023 141.2)
-
Step 200
200
#CAE1C6
oklch(88.5% 0.044 141)
-
Step 300
300
#A5CE9E
oklch(80.9% 0.079 141)
-
Step 400
400
#72B468
oklch(70.7% 0.126 141.2)
-
Step 500
500
#4AA03C
oklch(63% 0.16 141)
-
Step 600
600 (this color)
#21870A
oklch(54.5% 0.175 141.1)
-
Step 700
700
#177500
oklch(49% 0.162 141.1)
-
Step 800
800
#176008
oklch(42.8% 0.135 141)
-
Step 900
900
#1B4E13
oklch(37.6% 0.104 141.1)
-
Step 950
950
#112E0D
oklch(27% 0.067 141.3)
#21870A 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) | #8B7900 | 0.122 |
| Deuteranopia (no green cones) | #7F721E | 0.119 |
| Tritanopia (no blue cones) | #008272 | 0.117 |
| Achromatopsia (no color) | #757575 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21870A
#21870A
oklch(54.5% 0.175 141.1)
- #9C45AC
#9C45AC
oklch(54.5% 0.174 321.2)
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 #21870A, closest first.
No curated palette has a color within ΔE 0.04 of #21870A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.015
- Emerald Green #028F1E ΔE 0.023
- Dark Grass Green #388004 ΔE 0.023
- Green #008000 ΔE 0.026
- Tree Green #2A7E19 ΔE 0.030
- True Green #089404 ΔE 0.039
- Kelley Green #009337 ΔE 0.039
- Irish Green #019529 ΔE 0.040
Use #21870A 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.