#42D788
Closest named color: Aqua Green (#12E193). oklch(78.2% 0.169 155.5), rgb(66, 215, 136).
Aa
Black text reads best on this color (11.30:1).
About this color
#42D788 is a light, vivid green. In OKLCH its lightness is 78%, its chroma 0.169 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.027 away. Black text reads best on it, at 11.30:1.
| Hue family | Greens |
| Lightness | light (78%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 11.30:1 |
| White text | 1.85:1 |
Values
| HEX | #42D788 |
| RGB | rgb(66, 215, 136) |
| HSL | hsl(148, 65%, 55%) |
| OKLCH | oklch(78.2% 0.169 155.5) |
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 #42D788 | 1.85:1 | Fails | Lc -38.7 | Non-text elements, placeholder text |
| Black text on #42D788 | 11.30:1 | AAA | Lc 69.3 | Content text, not long reading |
| #42D788 text on white | 1.85:1 | Fails | Lc 34.6 | Non-text elements, placeholder text |
| #42D788 text on black | 11.30:1 | AAA | Lc -68.0 | Content text, not long reading |
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 300.
-
Step 50
50
#EAFAEF
oklch(97% 0.022 155.9)
-
Step 100
100
#D1F4DC
oklch(93.6% 0.049 155.4)
-
Step 200
200
#A6ECBF
oklch(88.5% 0.094 155.8)
-
Step 300
300 (this color)
#42D788
oklch(78.2% 0.169 155.5)
-
Step 400
400
#00BF70
oklch(70.7% 0.173 155.6)
-
Step 500
500
#00A45F
oklch(63.2% 0.155 155.5)
-
Step 600
600
#008A4F
oklch(55.7% 0.136 155.4)
-
Step 700
700
#007442
oklch(49.1% 0.12 155.6)
-
Step 800
800
#005F35
oklch(42.7% 0.104 155.6)
-
Step 900
900
#004F2B
oklch(37.6% 0.092 155.5)
-
Step 950
950
#003018
oklch(27.2% 0.067 155.5)
#42D788 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) | #D6C683 | 0.151 |
| Deuteranopia (no green cones) | #C3B98D | 0.147 |
| Tritanopia (no blue cones) | #00D5C3 | 0.081 |
| Achromatopsia (no color) | #BEBEBE | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42D788
#42D788
oklch(78.2% 0.169 155.5)
- #F98BE2
#F98BE2
oklch(78.3% 0.169 335.4)
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 #42D788, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.027
- Seaweed #18D17B ΔE 0.028
- Emerald #06D6A0 ΔE 0.033
- Weird Green #3AE57F ΔE 0.044
- Soft Green #6FC276 ΔE 0.058
- Greenblue #23C48B ΔE 0.060
- Fresh Green #69D84F ΔE 0.061
- Algae Green #21C36F ΔE 0.063
Use #42D788 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.