#3BBBA9
Closest named color: Topaz (#13BBAF). oklch(71.9% 0.113 181.7), rgb(59, 187, 169).
Aa
Black text reads best on this color (8.86:1).
About this color
#3BBBA9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.113 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.015 away. Black text reads best on it, at 8.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.86:1 |
| White text | 2.36:1 |
Values
| HEX | #3BBBA9 |
| RGB | rgb(59, 187, 169) |
| HSL | hsl(172, 52%, 48%) |
| OKLCH | oklch(71.9% 0.113 181.7) |
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 #3BBBA9 | 2.36:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #3BBBA9 | 8.86:1 | AAA | Lc 57.7 | Large or bold text, headings |
| #3BBBA9 text on white | 2.36:1 | Fails | Lc 46.3 | Large or bold text, headings |
| #3BBBA9 text on black | 8.86:1 | AAA | Lc -55.7 | 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
#EFF8F6
oklch(97.2% 0.01 181.4)
-
Step 100
100
#DCEFEB
oklch(93.7% 0.021 181.9)
-
Step 200
200
#BEE2DB
oklch(88.5% 0.039 182.3)
-
Step 300
300
#8DD0C4
oklch(80.9% 0.07 182)
-
Step 400
400 (this color)
#3BBBA9
oklch(71.9% 0.113 181.7)
-
Step 500
500
#009F8E
oklch(63% 0.113 181.8)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#3BBBA9 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) | #B3B0A8 | 0.120 |
| Deuteranopia (no green cones) | #A0A3AB | 0.113 |
| Tritanopia (no blue cones) | #00BEB5 | 0.020 |
| Achromatopsia (no color) | #A8A8A8 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3BBBA9
#3BBBA9
oklch(71.9% 0.113 181.7)
- #DE859F
#DE859F
oklch(71.8% 0.113 1.5)
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 #3BBBA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.015
- Greeny Blue #42B395 ΔE 0.030
- Light Sea Green #20B2AA ΔE 0.031
- Green Blue #01C08D ΔE 0.051
- Greenblue #23C48B ΔE 0.058
- Turquoise Blue #06B1C4 ΔE 0.058
- Medium Aquamarine #66CDAA ΔE 0.063
- Tea #65AB7C ΔE 0.065
Use #3BBBA9 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.