#5BB731
Closest named color: Leafy Green (#51B73B). oklch(69.7% 0.189 137.8), rgb(91, 183, 49).
Aa
Black text reads best on this color (8.26:1).
About this color
#5BB731 is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.189 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.009 away. Black text reads best on it, at 8.26:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.189) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 8.26:1 |
| White text | 2.54:1 |
Values
| HEX | #5BB731 |
| RGB | rgb(91, 183, 49) |
| HSL | hsl(101, 58%, 45%) |
| OKLCH | oklch(69.7% 0.189 137.8) |
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 #5BB731 | 2.54:1 | Fails | Lc -54.6 | Large or bold text, headings |
| Black text on #5BB731 | 8.26:1 | AAA | Lc 54.5 | Large or bold text, headings |
| #5BB731 text on white | 2.54:1 | Fails | Lc 49.5 | Large or bold text, headings |
| #5BB731 text on black | 8.26:1 | 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
#F0F8EE
oklch(97% 0.016 139.4)
-
Step 100
100
#DFF0DA
oklch(93.7% 0.034 138.6)
-
Step 200
200
#C5E4BA
oklch(88.5% 0.065 137.5)
-
Step 300
300
#9BD387
oklch(81% 0.118 137.7)
-
Step 400
400 (this color)
#5BB731
oklch(69.7% 0.189 137.8)
-
Step 500
500
#43A200
oklch(63% 0.194 137.8)
-
Step 600
600
#378900
oklch(55.7% 0.172 137.9)
-
Step 700
700
#2D7300
oklch(49.1% 0.151 137.9)
-
Step 800
800
#245E00
oklch(42.6% 0.131 137.7)
-
Step 900
900
#1D4F00
oklch(37.8% 0.116 137.7)
-
Step 950
950
#0E2F00
oklch(27% 0.083 137.8)
#5BB731 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) | #BDA718 | 0.121 |
| Deuteranopia (no green cones) | #B1A03E | 0.121 |
| Tritanopia (no blue cones) | #54B19D | 0.131 |
| Achromatopsia (no color) | #A2A2A2 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB731
#5BB731
oklch(69.7% 0.189 137.8)
- #CC71E8
#CC71E8
oklch(69.6% 0.189 317.8)
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 #5BB731, closest first.
No curated palette has a color within ΔE 0.04 of #5BB731.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.009
- Frog Green #58BC08 ΔE 0.024
- Grass #5CAC2D ΔE 0.031
- Turtle Green #75B84F ΔE 0.039
- Shamrock Green #02C14D ΔE 0.039
- Leaf Green #5CA904 ΔE 0.040
- Dark Lime #84B701 ΔE 0.041
- Leaf #71AA34 ΔE 0.041
Use #5BB731 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.