#5BCBA3
Closest named color: Medium Aquamarine (#66CDAA). oklch(76.6% 0.119 167), rgb(91, 203, 163).
Aa
Black text reads best on this color (10.51:1).
About this color
#5BCBA3 is a medium-light, moderately saturated green. In OKLCH its lightness is 77%, its chroma 0.119 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.014 away. Black text reads best on it, at 10.51:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.51:1 |
| White text | 1.99:1 |
Values
| HEX | #5BCBA3 |
| RGB | rgb(91, 203, 163) |
| HSL | hsl(159, 52%, 58%) |
| OKLCH | oklch(76.6% 0.119 167) |
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 #5BCBA3 | 1.99:1 | Fails | Lc -42.8 | Non-text elements, placeholder text |
| Black text on #5BCBA3 | 10.51:1 | AAA | Lc 65.5 | Content text, not long reading |
| #5BCBA3 text on white | 1.99:1 | Fails | Lc 38.4 | Non-text elements, placeholder text |
| #5BCBA3 text on black | 10.51:1 | AAA | Lc -64.0 | 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
#D5F2E5
oklch(93.7% 0.035 166.8)
-
Step 200
200
#B0E8D0
oklch(88.6% 0.066 166.7)
-
Step 300
300 (this color)
#5BCBA3
oklch(76.6% 0.119 167)
-
Step 400
400
#00BC8D
oklch(70.6% 0.145 167)
-
Step 500
500
#00A279
oklch(63.2% 0.13 167)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#5BCBA3 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) | #C7BEA1 | 0.120 |
| Deuteranopia (no green cones) | #B6B3A6 | 0.114 |
| Tritanopia (no blue cones) | #27CCC0 | 0.044 |
| Achromatopsia (no color) | #B7B7B7 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BCBA3
#5BCBA3
oklch(76.6% 0.119 167)
- #EA93C2
#EA93C2
oklch(76.6% 0.119 346.7)
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 #5BCBA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.014
- Seafoam Blue #78D1B6 ΔE 0.040
- Emerald #06D6A0 ΔE 0.042
- Pale Teal #82CBB2 ΔE 0.043
- Greenblue #23C48B ΔE 0.050
- Medium Turquoise #48D1CC ΔE 0.054
- Soft Green #6FC276 ΔE 0.055
- Dark Sea Green #8FBC8F ΔE 0.056
Use #5BCBA3 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.