#03971B
Closest named color: True Green (#089404). oklch(58.7% 0.191 143.7), rgb(3, 151, 27).
Aa
Black text reads best on this color (5.44:1).
About this color
#03971B is a medium-dark, vivid green. In OKLCH its lightness is 59%, its chroma 0.191 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is True Green (#089404), ΔE 0.011 away. Black text reads best on it, at 5.44:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | True Green (#089404) |
| Black text | 5.44:1 |
| White text | 3.85:1 |
Values
| HEX | #03971B |
| RGB | rgb(3, 151, 27) |
| HSL | hsl(130, 96%, 30%) |
| OKLCH | oklch(58.7% 0.191 143.7) |
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 #03971B | 3.85:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #03971B | 5.44:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #03971B text on white | 3.85:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #03971B text on black | 5.44:1 | AA | Lc -36.4 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E0EEE0
oklch(93.5% 0.024 145.4)
-
Step 200
200
#C7E2C6
oklch(88.5% 0.048 144.2)
-
Step 300
300
#9FD09D
oklch(81% 0.087 143.7)
-
Step 400
400
#67B666
oklch(70.6% 0.138 143.7)
-
Step 500
500
#34A339
oklch(63.1% 0.176 143.8)
-
Step 600
600 (this color)
#03971B
oklch(58.7% 0.191 143.7)
-
Step 700
700
#007612
oklch(49.1% 0.161 143.7)
-
Step 800
800
#00610D
oklch(42.7% 0.14 143.7)
-
Step 900
900
#0B5011
oklch(37.7% 0.115 143.8)
-
Step 950
950
#0B2F0C
oklch(27% 0.072 143.7)
#03971B 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) | #9A8800 | 0.137 |
| Deuteranopia (no green cones) | #8C7E2B | 0.137 |
| Tritanopia (no blue cones) | #009380 | 0.121 |
| Achromatopsia (no color) | #828282 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03971B
#03971B
oklch(58.7% 0.191 143.7)
- #B04ABB
#B04ABB
oklch(58.6% 0.191 323.7)
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 #03971B, closest first.
No curated palette has a color within ΔE 0.04 of #03971B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- True Green #089404 ΔE 0.011
- Irish Green #019529 ΔE 0.012
- Emerald Green #028F1E ΔE 0.025
- Kelley Green #009337 ΔE 0.027
- Grass Green #3F9B0B ΔE 0.029
- Grassy Green #419C03 ΔE 0.032
- Forest Green #228B22 ΔE 0.037
- Kelly Green #02AB2E ΔE 0.058
Use #03971B 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.