#197B21
Closest named color: Tree Green (#2A7E19). oklch(51% 0.153 143.9), rgb(25, 123, 33).
Aa
White text reads best on this color (5.38:1).
About this color
#197B21 is a medium-dark, vivid green. In OKLCH its lightness is 51%, its chroma 0.153 and its hue 144°. 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 5.38:1.
| Hue family | Greens |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 3.89:1 |
| White text | 5.38:1 |
Values
| HEX | #197B21 |
| RGB | rgb(25, 123, 33) |
| HSL | hsl(125, 66%, 29%) |
| OKLCH | oklch(51% 0.153 143.9) |
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 #197B21 | 5.38:1 | AA | Lc -81.7 | Fine for body text |
| Black text on #197B21 | 3.89:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #197B21 text on white | 5.38:1 | AA | Lc 76.4 | Fine for body text |
| #197B21 text on black | 3.89:1 | AA large text | Lc -25.4 | 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
#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
#A4CEA3
oklch(81% 0.074 144.3)
-
Step 400
400
#71B470
oklch(70.8% 0.119 143.9)
-
Step 500
500
#47A048
oklch(63.1% 0.152 143.7)
-
Step 600
600
#208A28
oklch(55.5% 0.164 143.9)
-
Step 700
700 (this color)
#197B21
oklch(51% 0.153 143.9)
-
Step 800
800
#136019
oklch(42.8% 0.127 143.9)
-
Step 900
900
#194E1B
oklch(37.6% 0.098 143.9)
-
Step 950
950
#102E11
oklch(27% 0.063 144.2)
#197B21 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) | #7D6F13 | 0.110 |
| Deuteranopia (no green cones) | #73672A | 0.112 |
| Tritanopia (no blue cones) | #007769 | 0.097 |
| Achromatopsia (no color) | #6A6A6A | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #197B21
#197B21
oklch(51% 0.153 143.9)
- #8F4197
#8F4197
oklch(51.1% 0.153 323.8)
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 #197B21, closest first.
No curated palette has a color within ΔE 0.04 of #197B21.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.015
- Green #008000 ΔE 0.026
- Dark Grass Green #388004 ΔE 0.030
- Jungle Green #048243 ΔE 0.035
- Forest Green #228B22 ΔE 0.050
- Emerald Green #028F1E ΔE 0.061
- Kelley Green #009337 ΔE 0.071
- Olive Green #677A04 ΔE 0.072
Use #197B21 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.