#5BC99D
Closest named color: Medium Aquamarine (#66CDAA). oklch(75.9% 0.121 164.5), rgb(91, 201, 157).
Aa
Black text reads best on this color (10.28:1).
About this color
#5BC99D is a medium-light, moderately saturated green. In OKLCH its lightness is 76%, its chroma 0.121 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.022 away. Black text reads best on it, at 10.28:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.28:1 |
| White text | 2.04:1 |
Values
| HEX | #5BC99D |
| RGB | rgb(91, 201, 157) |
| HSL | hsl(156, 50%, 57%) |
| OKLCH | oklch(75.9% 0.121 164.5) |
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 #5BC99D | 2.04:1 | Fails | Lc -44.0 | Non-text elements, placeholder text |
| Black text on #5BC99D | 10.28:1 | AAA | Lc 64.4 | Content text, not long reading |
| #5BC99D text on white | 2.04:1 | Fails | Lc 39.5 | Non-text elements, placeholder text |
| #5BC99D text on black | 10.28:1 | AAA | Lc -62.8 | 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
#ECF9F3
oklch(97.1% 0.016 166.7)
-
Step 100
100
#D6F2E4
oklch(93.7% 0.035 164.1)
-
Step 200
200
#B0E8CE
oklch(88.5% 0.068 164.8)
-
Step 300
300 (this color)
#5BC99D
oklch(75.9% 0.121 164.5)
-
Step 400
400
#00BD88
oklch(70.7% 0.15 164.5)
-
Step 500
500
#00A274
oklch(63.1% 0.134 164.5)
-
Step 600
600
#008861
oklch(55.5% 0.117 164.6)
-
Step 700
700
#007351
oklch(49.2% 0.104 164.3)
-
Step 800
800
#005E42
oklch(42.7% 0.09 164.7)
-
Step 900
900
#004E36
oklch(37.5% 0.079 164.5)
-
Step 950
950
#002F1F
oklch(27% 0.057 164.4)
#5BC99D 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) | #C6BC9B | 0.120 |
| Deuteranopia (no green cones) | #B5B1A0 | 0.114 |
| Tritanopia (no blue cones) | #2DC9BD | 0.048 |
| Achromatopsia (no color) | #B5B5B5 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BC99D
#5BC99D
oklch(75.9% 0.121 164.5)
- #E791C3
#E791C3
oklch(76% 0.121 344.5)
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 #5BC99D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.022
- Emerald #06D6A0 ΔE 0.043
- Greenblue #23C48B ΔE 0.043
- Soft Green #6FC276 ΔE 0.047
- Seafoam Blue #78D1B6 ΔE 0.048
- Pale Teal #82CBB2 ΔE 0.049
- Green Blue #01C08D ΔE 0.052
- Dark Sea Green #8FBC8F ΔE 0.054
Use #5BC99D 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.