#00B340
Closest named color: Shamrock (#01B44C). oklch(66.8% 0.199 146.9), rgb(0, 179, 64).
Aa
Black text reads best on this color (7.52:1).
About this color
#00B340 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.199 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.011 away. Black text reads best on it, at 7.52:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.199) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.52:1 |
| White text | 2.79:1 |
Values
| HEX | #00B340 |
| RGB | rgb(0, 179, 64) |
| HSL | hsl(141, 100%, 35%) |
| OKLCH | oklch(66.8% 0.199 146.9) |
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 #00B340 | 2.79:1 | Fails | Lc -58.2 | Large or bold text, headings |
| Black text on #00B340 | 7.52:1 | AAA | Lc 51.0 | Large or bold text, headings |
| #00B340 text on white | 2.79:1 | Fails | Lc 53.0 | Large or bold text, headings |
| #00B340 text on black | 7.52:1 | AAA | Lc -48.9 | Large or bold text, headings |
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 500.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DEEFDF
oklch(93.5% 0.028 147)
-
Step 200
200
#C3E3C5
oklch(88.4% 0.053 146.8)
-
Step 300
300
#96D29C
oklch(80.9% 0.097 147.1)
-
Step 400
400
#53BA64
oklch(70.7% 0.156 147.1)
-
Step 500
500 (this color)
#00B340
oklch(66.8% 0.199 146.9)
-
Step 600
600
#008B30
oklch(55.5% 0.165 146.9)
-
Step 700
700
#007527
oklch(49% 0.146 146.9)
-
Step 800
800
#00601F
oklch(42.6% 0.127 147)
-
Step 900
900
#005018
oklch(37.6% 0.112 146.9)
-
Step 950
950
#00300B
oklch(26.9% 0.08 146.8)
#00B340 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) | #B5A232 | 0.153 |
| Deuteranopia (no green cones) | #A5964A | 0.153 |
| Tritanopia (no blue cones) | #00AF9B | 0.120 |
| Achromatopsia (no color) | #9B9B9B | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00B340
#00B340
oklch(66.8% 0.199 146.9)
- #D15FD3
#D15FD3
oklch(66.7% 0.2 326.9)
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 #00B340, closest first.
No curated palette has a color within ΔE 0.04 of #00B340.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.011
- Kelly Green #02AB2E ΔE 0.025
- Medium Green #39AD48 ΔE 0.026
- Leafy Green #51B73B ΔE 0.036
- Shamrock Green #02C14D ΔE 0.040
- Grass #5CAC2D ΔE 0.040
- Cool Green #33B864 ΔE 0.044
- Leaf Green #5CA904 ΔE 0.045
Use #00B340 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.