#4ECD6C
Closest named color: Seaweed (#18D17B). oklch(75.5% 0.176 148.3), rgb(78, 205, 108).
Aa
Black text reads best on this color (10.27:1).
About this color
#4ECD6C is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.176 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.022 away. Black text reads best on it, at 10.27:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.176) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.27:1 |
| White text | 2.04:1 |
Values
| HEX | #4ECD6C |
| RGB | rgb(78, 205, 108) |
| HSL | hsl(134, 56%, 55%) |
| OKLCH | oklch(75.5% 0.176 148.3) |
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 #4ECD6C | 2.04:1 | Fails | Lc -43.9 | Non-text elements, placeholder text |
| Black text on #4ECD6C | 10.27:1 | AAA | Lc 64.5 | Content text, not long reading |
| #4ECD6C text on white | 2.04:1 | Fails | Lc 39.4 | Non-text elements, placeholder text |
| #4ECD6C text on black | 10.27:1 | AAA | Lc -62.9 | 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
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DCF0DE
oklch(93.5% 0.032 148.2)
-
Step 200
200
#BEE5C3
oklch(88.5% 0.062 148.6)
-
Step 300
300
#8ED598
oklch(81% 0.111 148)
-
Step 400
400 (this color)
#4ECD6C
oklch(75.5% 0.176 148.3)
-
Step 500
500
#00A543
oklch(63% 0.181 148.3)
-
Step 600
600
#008B37
oklch(55.5% 0.16 148.3)
-
Step 700
700
#00752D
oklch(49.1% 0.141 148.2)
-
Step 800
800
#006024
oklch(42.7% 0.122 148.4)
-
Step 900
900
#00501D
oklch(37.6% 0.108 148.5)
-
Step 950
950
#00300E
oklch(27% 0.077 148.3)
#4ECD6C 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) | #CFBC64 | 0.142 |
| Deuteranopia (no green cones) | #BFB173 | 0.140 |
| Tritanopia (no blue cones) | #29C9B6 | 0.101 |
| Achromatopsia (no color) | #B5B5B5 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4ECD6C
#4ECD6C
oklch(75.5% 0.176 148.3)
- #EA83E7
#EA83E7
oklch(75.6% 0.176 328.2)
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 #4ECD6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.022
- Algae Green #21C36F ΔE 0.039
- Dark Mint #48C072 ΔE 0.041
- Apple #6ECB3C ΔE 0.043
- Soft Green #6FC276 ΔE 0.044
- Dark Mint Green #20C073 ΔE 0.048
- Fresh Green #69D84F ΔE 0.051
- Greenblue #23C48B ΔE 0.055
Use #4ECD6C 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.