#3BB5B5
Closest named color: Light Sea Green (#20B2AA). oklch(70.8% 0.105 195), rgb(59, 181, 181).
Aa
Black text reads best on this color (8.46:1).
About this color
#3BB5B5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.105 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.022 away. Black text reads best on it, at 8.46:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 8.46:1 |
| White text | 2.48:1 |
Values
| HEX | #3BB5B5 |
| RGB | rgb(59, 181, 181) |
| HSL | hsl(180, 51%, 47%) |
| OKLCH | oklch(70.8% 0.105 195) |
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 #3BB5B5 | 2.48:1 | Fails | Lc -53.4 | Large or bold text, headings |
| Black text on #3BB5B5 | 8.46:1 | AAA | Lc 55.6 | Large or bold text, headings |
| #3BB5B5 text on white | 2.48:1 | Fails | Lc 48.4 | Large or bold text, headings |
| #3BB5B5 text on black | 8.46:1 | AAA | Lc -53.6 | 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
#EFF7F7
oklch(97% 0.008 197)
-
Step 100
100
#DCEEEE
oklch(93.6% 0.019 196.8)
-
Step 200
200
#BEE1E0
oklch(88.4% 0.037 194.4)
-
Step 300
300
#8ECECE
oklch(80.8% 0.065 195.9)
-
Step 400
400 (this color)
#3BB5B5
oklch(70.8% 0.105 195)
-
Step 500
500
#009D9E
oklch(63.1% 0.108 195.6)
-
Step 600
600
#008484
oklch(55.5% 0.095 194.8)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800
#005B5B
oklch(42.7% 0.073 194.8)
-
Step 900
900
#004C4C
oklch(37.7% 0.064 194.8)
-
Step 950
950
#002D2D
oklch(26.9% 0.046 194.8)
#3BB5B5 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) | #A9ACB5 | 0.109 |
| Deuteranopia (no green cones) | #979FB6 | 0.102 |
| Tritanopia (no blue cones) | #00BBB5 | 0.021 |
| Achromatopsia (no color) | #A4A4A4 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3BB5B5
#3BB5B5
oklch(70.8% 0.105 195)
- #DA858C
#DA858C
oklch(70.8% 0.105 14.8)
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 #3BB5B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.022
- Topaz #13BBAF ΔE 0.025
- Turquoise Blue #06B1C4 ΔE 0.032
- Greeny Blue #42B395 ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.064
- Dark Turquoise #00CED1 ΔE 0.070
- Greyblue #77A1B5 ΔE 0.071
- Dull Teal #5F9E8F ΔE 0.071
Use #3BB5B5 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.