#5BB571
Closest named color: Boring Green (#63B365). oklch(70% 0.132 149.8), rgb(91, 181, 113).
Aa
Black text reads best on this color (8.29:1).
About this color
#5BB571 is a medium-light, moderately saturated green. In OKLCH its lightness is 70%, its chroma 0.132 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Boring Green (#63B365), ΔE 0.014 away. Black text reads best on it, at 8.29:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Boring Green (#63B365) |
| Black text | 8.29:1 |
| White text | 2.53:1 |
Values
| HEX | #5BB571 |
| RGB | rgb(91, 181, 113) |
| HSL | hsl(135, 38%, 53%) |
| OKLCH | oklch(70% 0.132 149.8) |
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 #5BB571 | 2.53:1 | Fails | Lc -54.5 | Large or bold text, headings |
| Black text on #5BB571 | 8.29:1 | AAA | Lc 54.6 | Large or bold text, headings |
| #5BB571 text on white | 2.53:1 | Fails | Lc 49.4 | Large or bold text, headings |
| #5BB571 text on black | 8.29:1 | AAA | Lc -52.5 | 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
#F1F8F2
oklch(97.2% 0.011 149.9)
-
Step 100
100
#DFEFE2
oklch(93.7% 0.024 151.2)
-
Step 200
200
#C5E2C9
oklch(88.5% 0.046 149.2)
-
Step 300
300
#9BD0A4
oklch(80.9% 0.083 149.4)
-
Step 400
400 (this color)
#5BB571
oklch(70% 0.132 149.8)
-
Step 500
500
#16A44D
oklch(63% 0.169 149.8)
-
Step 600
600
#008B3E
oklch(55.6% 0.154 149.9)
-
Step 700
700
#007533
oklch(49.1% 0.136 149.9)
-
Step 800
800
#006028
oklch(42.7% 0.119 149.7)
-
Step 900
900
#005020
oklch(37.7% 0.105 149.6)
-
Step 950
950
#042F12
oklch(26.9% 0.07 149.7)
#5BB571 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) | #B6A86C | 0.110 |
| Deuteranopia (no green cones) | #A99F75 | 0.108 |
| Tritanopia (no blue cones) | #49B2A4 | 0.074 |
| Achromatopsia (no color) | #A3A3A3 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB571
#5BB571
oklch(70% 0.132 149.8)
- #CC7FC5
#CC7FC5
oklch(70.1% 0.131 330.1)
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 #5BB571, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Boring Green #63B365 ΔE 0.014
- Medium Sea Green #3CB371 ΔE 0.024
- Algae #54AC68 ΔE 0.028
- Dark Seafoam Green #3EAF76 ΔE 0.030
- Dark Mint #48C072 ΔE 0.032
- Faded Green #7BB274 ΔE 0.033
- Dark Seafoam #1FB57A ΔE 0.033
- Dark Pastel Green #56AE57 ΔE 0.034
Use #5BB571 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.