#4ECB81
Closest named color: Seaweed (#18D17B). oklch(75.4% 0.154 154.1), rgb(78, 203, 129).
Aa
Black text reads best on this color (10.18:1).
About this color
#4ECB81 is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.154 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.029 away. Black text reads best on it, at 10.18:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.18:1 |
| White text | 2.06:1 |
Values
| HEX | #4ECB81 |
| RGB | rgb(78, 203, 129) |
| HSL | hsl(144, 55%, 55%) |
| OKLCH | oklch(75.4% 0.154 154.1) |
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 #4ECB81 | 2.06:1 | Fails | Lc -44.4 | Non-text elements, placeholder text |
| Black text on #4ECB81 | 10.18:1 | AAA | Lc 64.0 | Content text, not long reading |
| #4ECB81 text on white | 2.06:1 | Fails | Lc 39.9 | Non-text elements, placeholder text |
| #4ECB81 text on black | 10.18:1 | AAA | Lc -62.4 | 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 400.
-
Step 50
50
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DCF0E2
oklch(93.6% 0.028 155.3)
-
Step 200
200
#BFE4C9
oklch(88.5% 0.053 153.5)
-
Step 300
300
#8ED3A4
oklch(80.8% 0.096 154)
-
Step 400
400 (this color)
#4ECB81
oklch(75.4% 0.154 154.1)
-
Step 500
500
#00A45B
oklch(63.1% 0.158 154.2)
-
Step 600
600
#008A4B
oklch(55.6% 0.14 154)
-
Step 700
700
#00743F
oklch(49.1% 0.123 154.3)
-
Step 800
800
#005F32
oklch(42.6% 0.107 154.1)
-
Step 900
900
#005029
oklch(37.8% 0.096 153.9)
-
Step 950
950
#003016
oklch(27.1% 0.069 153.7)
#4ECB81 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) | #CBBC7C | 0.136 |
| Deuteranopia (no green cones) | #BAB086 | 0.133 |
| Tritanopia (no blue cones) | #1AC9B8 | 0.077 |
| Achromatopsia (no color) | #B4B4B4 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4ECB81
#4ECB81
oklch(75.4% 0.154 154.1)
- #E987D7
#E987D7
oklch(75.4% 0.154 334.1)
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 #4ECB81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.029
- Soft Green #6FC276 ΔE 0.031
- Dark Mint #48C072 ΔE 0.033
- Greenblue #23C48B ΔE 0.034
- Algae Green #21C36F ΔE 0.039
- Emerald #06D6A0 ΔE 0.042
- Dark Mint Green #20C073 ΔE 0.043
- Green Blue #01C08D ΔE 0.049
Use #4ECB81 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.