#4BB271
Closest named color: Medium Sea Green (#3CB371). oklch(68.6% 0.136 153.1), rgb(75, 178, 113).
Aa
Black text reads best on this color (7.90:1).
About this color
#4BB271 is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.136 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Sea Green (#3CB371), ΔE 0.010 away. Black text reads best on it, at 7.90:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Medium Sea Green (#3CB371) |
| Black text | 7.90:1 |
| White text | 2.65:1 |
Values
| HEX | #4BB271 |
| RGB | rgb(75, 178, 113) |
| HSL | hsl(142, 41%, 50%) |
| OKLCH | oklch(68.6% 0.136 153.1) |
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 #4BB271 | 2.65:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #4BB271 | 7.90:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #4BB271 text on white | 2.65:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #4BB271 text on black | 7.90:1 | AAA | Lc -50.5 | 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
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DEEFE2
oklch(93.6% 0.025 152.9)
-
Step 200
200
#C2E3CB
oklch(88.5% 0.048 153.8)
-
Step 300
300
#96D1A7
oklch(80.9% 0.085 153.2)
-
Step 400
400 (this color)
#4BB271
oklch(68.6% 0.136 153.1)
-
Step 500
500
#00A458
oklch(63% 0.161 153.3)
-
Step 600
600
#008A49
oklch(55.5% 0.142 153.3)
-
Step 700
700
#00743C
oklch(49% 0.126 153.1)
-
Step 800
800
#005F30
oklch(42.6% 0.109 153.1)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#4BB271 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) | #B2A56D | 0.118 |
| Deuteranopia (no green cones) | #A49B75 | 0.116 |
| Tritanopia (no blue cones) | #2BB0A1 | 0.069 |
| Achromatopsia (no color) | #9F9F9F | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB271
#4BB271
oklch(68.6% 0.136 153.1)
- #CB78BE
#CB78BE
oklch(68.5% 0.136 332.9)
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 #4BB271, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Sea Green #3CB371 ΔE 0.010
- Dark Seafoam Green #3EAF76 ΔE 0.015
- Algae #54AC68 ΔE 0.017
- Bluey Green #2BB179 ΔE 0.020
- Dark Seafoam #1FB57A ΔE 0.021
- Seaweed Green #35AD6B ΔE 0.023
- Boring Green #63B365 ΔE 0.023
- Jade Green #2BAF6A ΔE 0.024
Use #4BB271 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.