#5BB171
Closest named color: Boring Green (#63B365). oklch(69% 0.126 150.3), rgb(91, 177, 113).
Aa
Black text reads best on this color (7.97:1).
About this color
#5BB171 is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.126 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 0.018 away. Black text reads best on it, at 7.97:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Boring Green (#63B365) |
| Black text | 7.97:1 |
| White text | 2.63:1 |
Values
| HEX | #5BB171 |
| RGB | rgb(91, 177, 113) |
| HSL | hsl(135, 36%, 53%) |
| OKLCH | oklch(69% 0.126 150.3) |
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 #5BB171 | 2.63:1 | Fails | Lc -56.3 | Large or bold text, headings |
| Black text on #5BB171 | 7.97:1 | AAA | Lc 52.9 | Large or bold text, headings |
| #5BB171 text on white | 2.63:1 | Fails | Lc 51.1 | Large or bold text, headings |
| #5BB171 text on black | 7.97:1 | AAA | Lc -50.8 | 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
#E0EEE2
oklch(93.5% 0.022 149.7)
-
Step 200
200
#C5E2CA
oklch(88.5% 0.045 150.3)
-
Step 300
300
#9CD0A6
oklch(81% 0.08 150.2)
-
Step 400
400 (this color)
#5BB171
oklch(69% 0.126 150.3)
-
Step 500
500
#22A352
oklch(63% 0.16 150.4)
-
Step 600
600
#008B3F
oklch(55.7% 0.153 150.2)
-
Step 700
700
#007534
oklch(49.2% 0.135 150.2)
-
Step 800
800
#00602A
oklch(42.8% 0.117 150.4)
-
Step 900
900
#005022
oklch(37.7% 0.103 150.5)
-
Step 950
950
#062F14
oklch(27% 0.066 150.4)
#5BB171 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 | 0.106 |
| Deuteranopia (no green cones) | #A69C75 | 0.104 |
| Tritanopia (no blue cones) | #4AAEA1 | 0.070 |
| Achromatopsia (no color) | #9F9F9F | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB171
#5BB171
oklch(69% 0.126 150.3)
- #C77DC0
#C77DC0
oklch(69% 0.126 330.3)
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 #5BB171, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Boring Green #63B365 ΔE 0.018
- Algae #54AC68 ΔE 0.018
- Medium Sea Green #3CB371 ΔE 0.022
- Dark Seafoam Green #3EAF76 ΔE 0.023
- Tea #65AB7C ΔE 0.028
- Bluey Green #2BB179 ΔE 0.030
- Dark Pastel Green #56AE57 ΔE 0.032
- Seaweed Green #35AD6B ΔE 0.032
Use #5BB171 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.