#5BB561
Closest named color: Boring Green (#63B365). oklch(69.7% 0.148 145.1), rgb(91, 181, 97).
Aa
Black text reads best on this color (8.22:1).
About this color
#5BB561 is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.148 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Boring Green (#63B365), ΔE 0.011 away. Black text reads best on it, at 8.22:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Boring Green (#63B365) |
| Black text | 8.22:1 |
| White text | 2.55:1 |
Values
| HEX | #5BB561 |
| RGB | rgb(91, 181, 97) |
| HSL | hsl(124, 38%, 53%) |
| OKLCH | oklch(69.7% 0.148 145.1) |
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 #5BB561 | 2.55:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #5BB561 | 8.22:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #5BB561 text on white | 2.55:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #5BB561 text on black | 8.22:1 | AAA | Lc -52.2 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#DFEFDF
oklch(93.6% 0.027 145.4)
-
Step 200
200
#C5E3C5
oklch(88.6% 0.052 145.1)
-
Step 300
300
#9BD19C
oklch(80.9% 0.093 145.1)
-
Step 400
400 (this color)
#5BB561
oklch(69.7% 0.148 145.1)
-
Step 500
500
#1BA534
oklch(63.1% 0.189 145)
-
Step 600
600
#008C25
oklch(55.6% 0.174 145.1)
-
Step 700
700
#00761D
oklch(49.2% 0.154 145)
-
Step 800
800
#006116
oklch(42.8% 0.135 145)
-
Step 900
900
#005111
oklch(37.8% 0.119 145.1)
-
Step 950
950
#05300B
oklch(27.1% 0.078 145.2)
#5BB561 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) | #B8A75A | 0.113 |
| Deuteranopia (no green cones) | #AB9F67 | 0.111 |
| Tritanopia (no blue cones) | #4DB1A1 | 0.090 |
| Achromatopsia (no color) | #A2A2A2 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB561
#5BB561
oklch(69.7% 0.148 145.1)
- #CB7BCF
#CB7BCF
oklch(69.7% 0.147 325.3)
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 #5BB561, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Boring Green #63B365 ΔE 0.011
- Dark Pastel Green #56AE57 ΔE 0.022
- Cool Green #33B864 ΔE 0.025
- Medium Sea Green #3CB371 ΔE 0.029
- Dark Mint #48C072 ΔE 0.031
- Algae #54AC68 ΔE 0.031
- Turtle Green #75B84F ΔE 0.031
- Fern #63A950 ΔE 0.033
Use #5BB561 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.