#3BB5DE
Closest named color: Turquoise Blue (#06B1C4). oklch(72.4% 0.12 225), rgb(59, 181, 222).
Aa
Black text reads best on this color (8.85:1).
About this color
#3BB5DE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.120 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.044 away. Black text reads best on it, at 8.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.85:1 |
| White text | 2.37:1 |
Values
| HEX | #3BB5DE |
| RGB | rgb(59, 181, 222) |
| HSL | hsl(195, 71%, 55%) |
| OKLCH | oklch(72.4% 0.12 225) |
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 #3BB5DE | 2.37:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #3BB5DE | 8.85:1 | AAA | Lc 57.6 | Large or bold text, headings |
| #3BB5DE text on white | 2.37:1 | Fails | Lc 46.4 | Large or bold text, headings |
| #3BB5DE text on black | 8.85:1 | 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
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DBEDF5
oklch(93.5% 0.022 226.1)
-
Step 200
200
#BDE0EE
oklch(88.6% 0.042 224)
-
Step 300
300
#8BCBE5
oklch(80.8% 0.075 225.4)
-
Step 400
400 (this color)
#3BB5DE
oklch(72.4% 0.12 225)
-
Step 500
500
#0098BF
oklch(63.2% 0.119 224.4)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#3BB5DE 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) | #9EB1E0 | 0.091 |
| Deuteranopia (no green cones) | #88A1DE | 0.081 |
| Tritanopia (no blue cones) | #00C1C2 | 0.064 |
| Achromatopsia (no color) | #A8A8A8 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3BB5DE
#3BB5DE
oklch(72.4% 0.12 225)
- #E48C64
#E48C64
oklch(72.4% 0.121 44.8)
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 #3BB5DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.044
- Deep Sky Blue #00BFFF ΔE 0.049
- Vivid Sky Blue #4CC9F0 ΔE 0.059
- Bright Sky Blue #02CCFE ΔE 0.067
- Greyblue #77A1B5 ΔE 0.076
- Dark Turquoise #00CED1 ΔE 0.079
- Light Sea Green #20B2AA ΔE 0.079
- Topaz #13BBAF ΔE 0.080
Use #3BB5DE 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.