#3ADAE5
Closest named color: Aqua Blue (#02D8E9). oklch(81.4% 0.127 202), rgb(58, 218, 229).
Aa
Black text reads best on this color (12.33:1).
About this color
#3ADAE5 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.127 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.015 away. Black text reads best on it, at 12.33:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.33:1 |
| White text | 1.70:1 |
Values
| HEX | #3ADAE5 |
| RGB | rgb(58, 218, 229) |
| HSL | hsl(184, 77%, 56%) |
| OKLCH | oklch(81.4% 0.127 202) |
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 #3ADAE5 | 1.70:1 | Fails | Lc -33.8 | Non-text elements, placeholder text |
| Black text on #3ADAE5 | 12.33:1 | AAA | Lc 73.8 | Content text, not long reading |
| #3ADAE5 text on white | 1.70:1 | Fails | Lc 30.0 | Dividers and decoration only |
| #3ADAE5 text on black | 12.33:1 | AAA | Lc -72.8 | 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
#E9F9FA
oklch(97.1% 0.017 201.4)
-
Step 100
100
#CFF2F4
oklch(93.7% 0.036 200.8)
-
Step 200
200
#A1E8ED
oklch(88.6% 0.071 201.5)
-
Step 300
300 (this color)
#3ADAE5
oklch(81.4% 0.127 202)
-
Step 400
400
#00B6C0
oklch(70.7% 0.12 201.8)
-
Step 500
500
#009CA5
oklch(63.1% 0.107 202)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#3ADAE5 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) | #C9D0E6 | 0.128 |
| Deuteranopia (no green cones) | #B1BFE6 | 0.118 |
| Tritanopia (no blue cones) | #00E3DD | 0.032 |
| Achromatopsia (no color) | #C6C6C6 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3ADAE5
#3ADAE5
oklch(81.4% 0.127 202)
- #FFA7A4
#FFA7A4
oklch(81.4% 0.105 21.7)
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 #3ADAE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.015
- Medium Turquoise #48D1CC ΔE 0.037
- Turquoise #40E0D0 ΔE 0.039
- Dark Turquoise #00CED1 ΔE 0.044
- Vivid Sky Blue #4CC9F0 ΔE 0.054
- Sky Blue #87CEEB ΔE 0.062
- Bright Sky Blue #02CCFE ΔE 0.062
- Seafoam Blue #78D1B6 ΔE 0.067
Use #3ADAE5 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.