#4FC561
Closest named color: Algae Green (#21C36F). oklch(73.3% 0.175 146.4), rgb(79, 197, 97).
Aa
Black text reads best on this color (9.49:1).
About this color
#4FC561 is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.175 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.026 away. Black text reads best on it, at 9.49:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.175) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 9.49:1 |
| White text | 2.21:1 |
Values
| HEX | #4FC561 |
| RGB | rgb(79, 197, 97) |
| HSL | hsl(129, 50%, 54%) |
| OKLCH | oklch(73.3% 0.175 146.4) |
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 #4FC561 | 2.21:1 | Fails | Lc -48.0 | Large or bold text, headings |
| Black text on #4FC561 | 9.49:1 | AAA | Lc 60.7 | Content text, not long reading |
| #4FC561 text on white | 2.21:1 | Fails | Lc 43.2 | Non-text elements, placeholder text |
| #4FC561 text on black | 9.49:1 | AAA | Lc -59.0 | 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
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DDF0DE
oklch(93.6% 0.031 146.8)
-
Step 200
200
#C0E5C2
oklch(88.6% 0.061 146.5)
-
Step 300
300
#91D496
oklch(80.9% 0.11 146.3)
-
Step 400
400 (this color)
#4FC561
oklch(73.3% 0.175 146.4)
-
Step 500
500
#00A637
oklch(63.1% 0.191 146.3)
-
Step 600
600
#008C2D
oklch(55.7% 0.169 146.3)
-
Step 700
700
#007525
oklch(49% 0.148 146.5)
-
Step 800
800
#00601D
oklch(42.6% 0.128 146.5)
-
Step 900
900
#005016
oklch(37.5% 0.114 146.3)
-
Step 950
950
#00300A
oklch(26.9% 0.081 146.4)
#4FC561 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) | #C8B558 | 0.136 |
| Deuteranopia (no green cones) | #B8AA68 | 0.135 |
| Tritanopia (no blue cones) | #34C1AE | 0.104 |
| Achromatopsia (no color) | #AEAEAE | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FC561
#4FC561
oklch(73.3% 0.175 146.4)
- #E07DE2
#E07DE2
oklch(73.3% 0.175 326.5)
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 #4FC561, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.026
- Dark Mint #48C072 ΔE 0.028
- Dark Mint Green #20C073 ΔE 0.035
- Seaweed #18D17B ΔE 0.037
- Shamrock Green #02C14D ΔE 0.040
- Soft Green #6FC276 ΔE 0.041
- Turtle Green #75B84F ΔE 0.041
- Cool Green #33B864 ΔE 0.044
Use #4FC561 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.