#42B231
Closest named color: Leafy Green (#51B73B). oklch(67.4% 0.194 141.2), rgb(66, 178, 49).
Aa
Black text reads best on this color (7.64:1).
About this color
#42B231 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.194 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.020 away. Black text reads best on it, at 7.64:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.194) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 7.64:1 |
| White text | 2.74:1 |
Values
| HEX | #42B231 |
| RGB | rgb(66, 178, 49) |
| HSL | hsl(112, 57%, 45%) |
| OKLCH | oklch(67.4% 0.194 141.2) |
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 #42B231 | 2.74:1 | Fails | Lc -57.9 | Large or bold text, headings |
| Black text on #42B231 | 7.64:1 | AAA | Lc 51.4 | Large or bold text, headings |
| #42B231 text on white | 2.74:1 | Fails | Lc 52.7 | Large or bold text, headings |
| #42B231 text on black | 7.64:1 | AAA | Lc -49.2 | 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 400.
-
Step 50
50
#F0F8EE
oklch(97% 0.016 139.4)
-
Step 100
100
#DEF0DA
oklch(93.6% 0.035 140)
-
Step 200
200
#C1E5BB
oklch(88.5% 0.068 141.1)
-
Step 300
300
#94D48A
oklch(80.8% 0.121 141.1)
-
Step 400
400 (this color)
#42B231
oklch(67.4% 0.194 141.2)
-
Step 500
500
#22A600
oklch(63.2% 0.209 141.3)
-
Step 600
600
#1B8B00
oklch(55.5% 0.183 141.2)
-
Step 700
700
#157500
oklch(49% 0.162 141.2)
-
Step 800
800
#106000
oklch(42.6% 0.141 141.2)
-
Step 900
900
#0B5000
oklch(37.6% 0.124 141.3)
-
Step 950
950
#043000
oklch(26.9% 0.089 141.3)
#42B231 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) | #B6A21B | 0.133 |
| Deuteranopia (no green cones) | #A9983E | 0.135 |
| Tritanopia (no blue cones) | #2FAC99 | 0.129 |
| Achromatopsia (no color) | #9C9C9C | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42B231
#42B231
oklch(67.4% 0.194 141.2)
- #CB67DD
#CB67DD
oklch(67.5% 0.193 321.3)
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 #42B231, closest first.
No curated palette has a color within ΔE 0.04 of #42B231.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.020
- Grass #5CAC2D ΔE 0.023
- Shamrock #01B44C ΔE 0.025
- Medium Green #39AD48 ΔE 0.027
- Leaf Green #5CA904 ΔE 0.028
- Kelly Green #02AB2E ΔE 0.034
- Frog Green #58BC08 ΔE 0.040
- Shamrock Green #02C14D ΔE 0.042
Use #42B231 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.