#99D3DA
Closest named color: Celeste (#A8DADC). oklch(83% 0.06 205.4), rgb(153, 211, 218).
Aa
Black text reads best on this color (12.68:1).
About this color
#99D3DA is a light, muted teal or cyan. In OKLCH its lightness is 83%, its chroma 0.060 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Celeste (#A8DADC), ΔE 0.027 away. Black text reads best on it, at 12.68:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Celeste (#A8DADC) |
| Black text | 12.68:1 |
| White text | 1.65:1 |
Values
| HEX | #99D3DA |
| RGB | rgb(153, 211, 218) |
| HSL | hsl(186, 47%, 73%) |
| OKLCH | oklch(83% 0.06 205.4) |
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 #99D3DA | 1.65:1 | Fails | Lc -32.6 | Non-text elements, placeholder text |
| Black text on #99D3DA | 12.68:1 | AAA | Lc 74.9 | Content text, not long reading |
| #99D3DA text on white | 1.65:1 | Fails | Lc 28.9 | Dividers and decoration only |
| #99D3DA text on black | 12.68:1 | AAA | Lc -74.0 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DDEDEF
oklch(93.5% 0.017 205.8)
-
Step 200
200
#C1E0E4
oklch(88.5% 0.033 206.1)
-
Step 300
300 (this color)
#99D3DA
oklch(83% 0.06 205.4)
-
Step 400
400
#4AB2BD
oklch(70.8% 0.096 204.9)
-
Step 500
500
#009CA9
oklch(63.2% 0.108 205.2)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#99D3DA 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) | #CACEDB | 0.060 |
| Deuteranopia (no green cones) | #BEC5DA | 0.055 |
| Tritanopia (no blue cones) | #82D8D5 | 0.028 |
| Achromatopsia (no color) | #C9C9C9 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99D3DA
#99D3DA
oklch(83% 0.06 205.4)
- #ECB9B3
#ECB9B3
oklch(83% 0.06 26.2)
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 #99D3DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Celeste #A8DADC ΔE 0.027
- Light Blue #ADD8E6 ΔE 0.032
- Sky Blue #87CEEB ΔE 0.036
- Tiffany Blue #94D2BD ΔE 0.042
- Powder Blue #B0E0E6 ΔE 0.047
- Light Blue Grey #B7C9E2 ΔE 0.047
- Cloudy Blue #ACC2D9 ΔE 0.049
- Light Steel Blue #B0C4DE ΔE 0.049
Use #99D3DA 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.