#3DD5DD
Closest named color: Aqua Blue (#02D8E9). oklch(80% 0.123 200.3), rgb(61, 213, 221).
Aa
Black text reads best on this color (11.76:1).
About this color
#3DD5DD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.123 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.019 away. Black text reads best on it, at 11.76:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 11.76:1 |
| White text | 1.78:1 |
Values
| HEX | #3DD5DD |
| RGB | rgb(61, 213, 221) |
| HSL | hsl(183, 70%, 55%) |
| OKLCH | oklch(80% 0.123 200.3) |
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 #3DD5DD | 1.78:1 | Fails | Lc -36.6 | Non-text elements, placeholder text |
| Black text on #3DD5DD | 11.76:1 | AAA | Lc 71.3 | Content text, not long reading |
| #3DD5DD text on white | 1.78:1 | Fails | Lc 32.6 | Non-text elements, placeholder text |
| #3DD5DD text on black | 11.76:1 | AAA | Lc -70.1 | 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
#EAF9FA
oklch(97.1% 0.016 201.7)
-
Step 100
100
#D0F2F3
oklch(93.7% 0.035 198.7)
-
Step 200
200
#A3E7EB
oklch(88.4% 0.068 200.6)
-
Step 300
300 (this color)
#3DD5DD
oklch(80% 0.123 200.3)
-
Step 400
400
#00B6BE
oklch(70.6% 0.12 200.4)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008389
oklch(55.5% 0.094 200.5)
-
Step 700
700
#006F74
oklch(49.2% 0.084 200.3)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004C4F
oklch(37.8% 0.064 199.4)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#3DD5DD 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) | #C5CBDE | 0.125 |
| Deuteranopia (no green cones) | #AEBBDE | 0.115 |
| Tritanopia (no blue cones) | #00DDD7 | 0.029 |
| Achromatopsia (no color) | #C2C2C2 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3DD5DD
#3DD5DD
oklch(80% 0.123 200.3)
- #FF9F9F
#FF9F9F
oklch(80% 0.115 19.9)
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 #3DD5DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.019
- Medium Turquoise #48D1CC ΔE 0.023
- Dark Turquoise #00CED1 ΔE 0.030
- Turquoise #40E0D0 ΔE 0.041
- Vivid Sky Blue #4CC9F0 ΔE 0.050
- Seafoam Blue #78D1B6 ΔE 0.059
- Bright Sky Blue #02CCFE ΔE 0.062
- Sky Blue #87CEEB ΔE 0.062
Use #3DD5DD 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.