#5BD18D
Closest named color: Emerald (#06D6A0). oklch(77.5% 0.146 155.4), rgb(91, 209, 141).
Aa
Black text reads best on this color (10.94:1).
About this color
#5BD18D is a medium-light, vivid green. In OKLCH its lightness is 78%, its chroma 0.146 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.033 away. Black text reads best on it, at 10.94:1.
| Hue family | Greens |
| Lightness | medium-light (78%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.94:1 |
| White text | 1.91:1 |
Values
| HEX | #5BD18D |
| RGB | rgb(91, 209, 141) |
| HSL | hsl(145, 56%, 59%) |
| OKLCH | oklch(77.5% 0.146 155.4) |
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 #5BD18D | 1.91:1 | Fails | Lc -40.6 | Non-text elements, placeholder text |
| Black text on #5BD18D | 10.94:1 | AAA | Lc 67.5 | Content text, not long reading |
| #5BD18D text on white | 1.91:1 | Fails | Lc 36.4 | Non-text elements, placeholder text |
| #5BD18D text on black | 10.94:1 | AAA | Lc -66.1 | Content text, not long reading |
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 300.
-
Step 50
50
#ECFAF0
oklch(97.2% 0.02 154.9)
-
Step 100
100
#D5F3DE
oklch(93.7% 0.042 155)
-
Step 200
200
#AEEAC2
oklch(88.5% 0.082 155.2)
-
Step 300
300 (this color)
#5BD18D
oklch(77.5% 0.146 155.4)
-
Step 400
400
#00BF6F
oklch(70.7% 0.174 155.3)
-
Step 500
500
#00A45F
oklch(63.2% 0.155 155.5)
-
Step 600
600
#008A4F
oklch(55.7% 0.136 155.4)
-
Step 700
700
#007442
oklch(49.1% 0.12 155.6)
-
Step 800
800
#005F35
oklch(42.7% 0.104 155.6)
-
Step 900
900
#004F2B
oklch(37.6% 0.092 155.5)
-
Step 950
950
#003018
oklch(27.2% 0.067 155.5)
#5BD18D 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) | #D0C289 | 0.131 |
| Deuteranopia (no green cones) | #C0B791 | 0.127 |
| Tritanopia (no blue cones) | #34CFBF | 0.071 |
| Achromatopsia (no color) | #BBBBBB | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BD18D
#5BD18D
oklch(77.5% 0.146 155.4)
- #EF90DA
#EF90DA
oklch(77.5% 0.146 335.5)
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 #5BD18D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.033
- Seaweed #18D17B ΔE 0.041
- Soft Green #6FC276 ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.046
- Aqua Green #12E193 ΔE 0.047
- Greenblue #23C48B ΔE 0.051
- Dark Mint #48C072 ΔE 0.056
- Algae Green #21C36F ΔE 0.063
Use #5BD18D 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.