#4ECB7B
Closest named color: Seaweed (#18D17B). oklch(75.3% 0.16 152.3), rgb(78, 203, 123).
Aa
Black text reads best on this color (10.15:1).
About this color
#4ECB7B is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.160 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.025 away. Black text reads best on it, at 10.15:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.15:1 |
| White text | 2.06:1 |
Values
| HEX | #4ECB7B |
| RGB | rgb(78, 203, 123) |
| HSL | hsl(142, 55%, 55%) |
| OKLCH | oklch(75.3% 0.16 152.3) |
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 #4ECB7B | 2.06:1 | Fails | Lc -44.6 | Non-text elements, placeholder text |
| Black text on #4ECB7B | 10.15:1 | AAA | Lc 63.9 | Content text, not long reading |
| #4ECB7B text on white | 2.06:1 | Fails | Lc 40.0 | Non-text elements, placeholder text |
| #4ECB7B text on black | 10.15:1 | AAA | Lc -62.3 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DCF0E1
oklch(93.6% 0.029 153.3)
-
Step 200
200
#BFE4C8
oklch(88.5% 0.054 152.5)
-
Step 300
300
#8ED4A1
oklch(81% 0.101 152.2)
-
Step 400
400 (this color)
#4ECB7B
oklch(75.3% 0.16 152.3)
-
Step 500
500
#00A454
oklch(63% 0.165 152.2)
-
Step 600
600
#008A46
oklch(55.5% 0.145 152.3)
-
Step 700
700
#00743A
oklch(49% 0.128 152.4)
-
Step 800
800
#00602E
oklch(42.8% 0.113 152)
-
Step 900
900
#005026
oklch(37.8% 0.099 152.3)
-
Step 950
950
#003014
oklch(27.1% 0.071 152.1)
#4ECB7B 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) | #CBBB75 | 0.137 |
| Deuteranopia (no green cones) | #BBB080 | 0.134 |
| Tritanopia (no blue cones) | #20C8B7 | 0.084 |
| Achromatopsia (no color) | #B4B4B4 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4ECB7B
#4ECB7B
oklch(75.3% 0.16 152.3)
- #E986DB
#E986DB
oklch(75.4% 0.16 332.4)
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 #4ECB7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.025
- Soft Green #6FC276 ΔE 0.031
- Dark Mint #48C072 ΔE 0.032
- Algae Green #21C36F ΔE 0.036
- Greenblue #23C48B ΔE 0.038
- Dark Mint Green #20C073 ΔE 0.041
- Emerald #06D6A0 ΔE 0.047
- Green Blue #01C08D ΔE 0.052
Use #4ECB7B 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.