#01DDDD
Closest named color: Aqua Blue (#02D8E9). oklch(81.3% 0.139 194.8), rgb(1, 221, 221).
Aa
Black text reads best on this color (12.38:1).
About this color
#01DDDD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.139 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.026 away. Black text reads best on it, at 12.38:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.38:1 |
| White text | 1.69:1 |
Values
| HEX | #01DDDD |
| RGB | rgb(1, 221, 221) |
| HSL | hsl(180, 99%, 44%) |
| OKLCH | oklch(81.3% 0.139 194.8) |
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 #01DDDD | 1.69:1 | Fails | Lc -33.2 | Non-text elements, placeholder text |
| Black text on #01DDDD | 12.38:1 | AAA | Lc 74.3 | Content text, not long reading |
| #01DDDD text on white | 1.69:1 | Fails | Lc 29.5 | Dividers and decoration only |
| #01DDDD text on black | 12.38:1 | AAA | Lc -73.3 | 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
#E8FAF9
oklch(97.2% 0.019 192.8)
-
Step 100
100
#CCF3F2
oklch(93.6% 0.04 194.6)
-
Step 200
200
#9BEAE9
oklch(88.6% 0.077 194.8)
-
Step 300
300 (this color)
#01DDDD
oklch(81.3% 0.139 194.8)
-
Step 400
400
#00B7B7
oklch(70.6% 0.12 194.8)
-
Step 500
500
#009D9D
oklch(63% 0.108 194.8)
-
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)
#01DDDD 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) | #CDD1DD | 0.144 |
| Deuteranopia (no green cones) | #B4BFDE | 0.135 |
| Tritanopia (no blue cones) | #00E5DD | 0.023 |
| Achromatopsia (no color) | #C7C7C7 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01DDDD
#01DDDD
oklch(81.3% 0.139 194.8)
- #FFA5AC
#FFA5AC
oklch(81.3% 0.107 14.6)
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 #01DDDD, closest first.
No curated palette has a color within ΔE 0.04 of #01DDDD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.026
- Turquoise #40E0D0 ΔE 0.026
- Medium Turquoise #48D1CC ΔE 0.035
- Dark Turquoise #00CED1 ΔE 0.042
- Seafoam Blue #78D1B6 ΔE 0.065
- Aqua Marine #2EE8BB ΔE 0.065
- Vivid Sky Blue #4CC9F0 ΔE 0.071
- Medium Aquamarine #66CDAA ΔE 0.072
Use #01DDDD 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.