#1DDFFF
Closest named color: Aqua Blue (#02D8E9). oklch(83.2% 0.142 213.3), rgb(29, 223, 255).
Aa
Black text reads best on this color (13.05:1).
About this color
#1DDFFF is a light, vivid teal or cyan. In OKLCH its lightness is 83%, its chroma 0.142 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.034 away. Black text reads best on it, at 13.05:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 13.05:1 |
| White text | 1.60:1 |
Values
| HEX | #1DDFFF |
| RGB | rgb(29, 223, 255) |
| HSL | hsl(188, 100%, 56%) |
| OKLCH | oklch(83.2% 0.142 213.3) |
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 #1DDFFF | 1.60:1 | Fails | Lc -30.2 | Non-text elements, placeholder text |
| Black text on #1DDFFF | 13.05:1 | AAA | Lc 77.0 | Fine for body text |
| #1DDFFF text on white | 1.60:1 | Fails | Lc 26.8 | Dividers and decoration only |
| #1DDFFF text on black | 13.05:1 | AAA | Lc -76.2 | Fine for body text |
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
#E8F9FD
oklch(97.1% 0.019 213.4)
-
Step 100
100
#CCF2FB
oklch(93.7% 0.041 213.7)
-
Step 200
200
#9BE7F9
oklch(88.5% 0.079 214.2)
-
Step 300
300 (this color)
#1DDFFF
oklch(83.2% 0.142 213.3)
-
Step 400
400
#00B4CF
oklch(70.8% 0.124 213.4)
-
Step 500
500
#009AB1
oklch(63% 0.11 213.1)
-
Step 600
600
#008295
oklch(55.7% 0.097 212.5)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#1DDFFF 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) | #C7D7FF | 0.128 |
| Deuteranopia (no green cones) | #ACC3FF | 0.117 |
| Tritanopia (no blue cones) | #00EBE9 | 0.053 |
| Achromatopsia (no color) | #CCCCCC | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1DDFFF
#1DDFFF
oklch(83.2% 0.142 213.3)
- #FFB2A0
#FFB2A0
oklch(83.2% 0.094 33.7)
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 #1DDFFF, closest first.
No curated palette has a color within ΔE 0.04 of #1DDFFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.034
- Bright Sky Blue #02CCFE ΔE 0.054
- Vivid Sky Blue #4CC9F0 ΔE 0.057
- Robin's Egg #6DEDFD ΔE 0.058
- Sky Blue #87CEEB ΔE 0.067
- Light Sky Blue #87CEFA ΔE 0.068
- Turquoise #40E0D0 ΔE 0.068
- Bright Light Blue #26F7FD ΔE 0.068
Use #1DDFFF 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.