#5BB143
Closest named color: Grass (#5CAC2D). oklch(68.3% 0.169 139.4), rgb(91, 177, 67).
Aa
Black text reads best on this color (7.81:1).
About this color
#5BB143 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.169 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass (#5CAC2D), ΔE 0.019 away. Black text reads best on it, at 7.81:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Grass (#5CAC2D) |
| Black text | 7.81:1 |
| White text | 2.68:1 |
Values
| HEX | #5BB143 |
| RGB | rgb(91, 177, 67) |
| HSL | hsl(107, 45%, 48%) |
| OKLCH | oklch(68.3% 0.169 139.4) |
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 #5BB143 | 2.68:1 | Fails | Lc -57.1 | Large or bold text, headings |
| Black text on #5BB143 | 7.81:1 | AAA | Lc 52.1 | Large or bold text, headings |
| #5BB143 text on white | 2.68:1 | Fails | Lc 51.9 | Large or bold text, headings |
| #5BB143 text on black | 7.81:1 | AAA | Lc -50.0 | 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
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#E0EFDC
oklch(93.6% 0.03 139.1)
-
Step 200
200
#C6E3BE
oklch(88.5% 0.059 138.9)
-
Step 300
300
#9DD290
oklch(81% 0.106 139.5)
-
Step 400
400 (this color)
#5BB143
oklch(68.3% 0.169 139.4)
-
Step 500
500
#37A400
oklch(63.1% 0.201 139.4)
-
Step 600
600
#2D8A00
oklch(55.6% 0.177 139.4)
-
Step 700
700
#247400
oklch(49.1% 0.156 139.5)
-
Step 800
800
#1C5F00
oklch(42.6% 0.136 139.5)
-
Step 900
900
#164F00
oklch(37.6% 0.119 139.4)
-
Step 950
950
#0A3000
oklch(27.2% 0.086 139.4)
#5BB143 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) | #B6A236 | 0.114 |
| Deuteranopia (no green cones) | #AA9B4C | 0.113 |
| Tritanopia (no blue cones) | #53AB9A | 0.115 |
| Achromatopsia (no color) | #9E9E9E | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB143
#5BB143
oklch(68.3% 0.169 139.4)
- #C572DA
#C572DA
oklch(68.2% 0.17 319.3)
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 #5BB143, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass #5CAC2D ΔE 0.019
- Leafy Green #51B73B ΔE 0.021
- Dark Pastel Green #56AE57 ΔE 0.024
- Leaf #71AA34 ΔE 0.025
- Medium Green #39AD48 ΔE 0.029
- Fern #63A950 ΔE 0.031
- Mid Green #50A747 ΔE 0.033
- Leaf Green #5CA904 ΔE 0.035
Use #5BB143 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.