#5BB551
Closest named color: Dark Pastel Green (#56AE57). oklch(69.5% 0.162 141.7), rgb(91, 181, 81).
Aa
Black text reads best on this color (8.17:1).
About this color
#5BB551 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.162 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.024 away. Black text reads best on it, at 8.17:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 8.17:1 |
| White text | 2.56:1 |
Values
| HEX | #5BB551 |
| RGB | rgb(91, 181, 81) |
| HSL | hsl(114, 40%, 51%) |
| OKLCH | oklch(69.5% 0.162 141.7) |
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 #5BB551 | 2.56:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #5BB551 | 8.17:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #5BB551 text on white | 2.56:1 | Fails | Lc 50.0 | Large or bold text, headings |
| #5BB551 text on black | 8.17:1 | AAA | Lc -51.9 | 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
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#DFEFDD
oklch(93.5% 0.029 142.2)
-
Step 200
200
#C5E3C1
oklch(88.5% 0.056 141.9)
-
Step 300
300
#9BD294
oklch(81% 0.103 141.8)
-
Step 400
400 (this color)
#5BB551
oklch(69.5% 0.162 141.7)
-
Step 500
500
#1FA60A
oklch(63.2% 0.208 141.7)
-
Step 600
600
#138C00
oklch(55.6% 0.186 141.8)
-
Step 700
700
#0F7600
oklch(49.2% 0.164 141.7)
-
Step 800
800
#0A6100
oklch(42.8% 0.143 141.7)
-
Step 900
900
#075100
oklch(37.8% 0.126 141.7)
-
Step 950
950
#053002
oklch(27% 0.087 141.7)
#5BB551 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) | #B9A648 | 0.116 |
| Deuteranopia (no green cones) | #AD9E58 | 0.116 |
| Tritanopia (no blue cones) | #50B09F | 0.106 |
| Achromatopsia (no color) | #A1A1A1 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB551
#5BB551
oklch(69.5% 0.162 141.7)
- #CA77D8
#CA77D8
oklch(69.4% 0.162 321.7)
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 #5BB551, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.024
- Leafy Green #51B73B ΔE 0.025
- Boring Green #63B365 ΔE 0.027
- Turtle Green #75B84F ΔE 0.027
- Cool Green #33B864 ΔE 0.027
- Grass #5CAC2D ΔE 0.034
- Fern #63A950 ΔE 0.034
- Leaf #71AA34 ΔE 0.034
Use #5BB551 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.