#5BCBA9
Closest named color: Medium Aquamarine (#66CDAA). oklch(76.7% 0.115 170.5), rgb(91, 203, 169).
Aa
Black text reads best on this color (10.56:1).
About this color
#5BCBA9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.115 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.011 away. Black text reads best on it, at 10.56:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.56:1 |
| White text | 1.98:1 |
Values
| HEX | #5BCBA9 |
| RGB | rgb(91, 203, 169) |
| HSL | hsl(162, 52%, 58%) |
| OKLCH | oklch(76.7% 0.115 170.5) |
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 #5BCBA9 | 1.98:1 | Fails | Lc -42.6 | Non-text elements, placeholder text |
| Black text on #5BCBA9 | 10.56:1 | AAA | Lc 65.7 | Content text, not long reading |
| #5BCBA9 text on white | 1.98:1 | Fails | Lc 38.2 | Non-text elements, placeholder text |
| #5BCBA9 text on black | 10.56:1 | AAA | Lc -64.2 | 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
#ECF9F4
oklch(97.1% 0.015 171.1)
-
Step 100
100
#D5F1E7
oklch(93.5% 0.032 172.1)
-
Step 200
200
#AFE7D3
oklch(88.4% 0.064 170.8)
-
Step 300
300 (this color)
#5BCBA9
oklch(76.7% 0.115 170.5)
-
Step 400
400
#00BC94
oklch(70.8% 0.139 170.4)
-
Step 500
500
#00A17F
oklch(63.1% 0.124 170.8)
-
Step 600
600
#00876A
oklch(55.5% 0.109 170.8)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#004E3C
oklch(37.7% 0.074 170.6)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#5BCBA9 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) | #C6BFA7 | 0.118 |
| Deuteranopia (no green cones) | #B5B3AB | 0.112 |
| Tritanopia (no blue cones) | #20CCC1 | 0.039 |
| Achromatopsia (no color) | #B8B8B8 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BCBA9
#5BCBA9
oklch(76.7% 0.115 170.5)
- #EB94BD
#EB94BD
oklch(76.7% 0.116 350.4)
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 #5BCBA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.011
- Seafoam Blue #78D1B6 ΔE 0.036
- Pale Teal #82CBB2 ΔE 0.038
- Medium Turquoise #48D1CC ΔE 0.046
- Emerald #06D6A0 ΔE 0.047
- Greenblue #23C48B ΔE 0.056
- Dark Sea Green #8FBC8F ΔE 0.058
- Dark Turquoise #00CED1 ΔE 0.058
Use #5BCBA9 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.