#99DFFF
Closest named color: Light Blue (#ADD8E6). oklch(86.8% 0.083 228.3), rgb(153, 223, 255).
Aa
Black text reads best on this color (14.35:1).
About this color
#99DFFF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 87%, its chroma 0.083 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue (#ADD8E6), ΔE 0.037 away. Black text reads best on it, at 14.35:1.
| Hue family | Teals and cyans |
| Lightness | light (87%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 14.35:1 |
| White text | 1.46:1 |
Values
| HEX | #99DFFF |
| RGB | rgb(153, 223, 255) |
| HSL | hsl(199, 100%, 80%) |
| OKLCH | oklch(86.8% 0.083 228.3) |
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 #99DFFF | 1.46:1 | Fails | Lc -24.9 | Dividers and decoration only |
| Black text on #99DFFF | 14.35:1 | AAA | Lc 81.8 | Fine for body text |
| #99DFFF text on white | 1.46:1 | Fails | Lc 21.9 | Dividers and decoration only |
| #99DFFF text on black | 14.35:1 | AAA | Lc -81.4 | 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 200.
-
Step 50
50
#ECF8FD
oklch(97.2% 0.014 224.5)
-
Step 100
100
#D6EEFA
oklch(93.5% 0.03 229.2)
-
Step 200
200 (this color)
#99DFFF
oklch(86.8% 0.083 228.3)
-
Step 300
300
#70CEF7
oklch(80.9% 0.106 228.5)
-
Step 400
400
#00B0E4
oklch(70.7% 0.138 228.2)
-
Step 500
500
#0097C4
oklch(63.2% 0.123 228.1)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004960
oklch(37.8% 0.073 227.3)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#99DFFF 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) | #CEDCFF | 0.061 |
| Deuteranopia (no green cones) | #C0D0FF | 0.056 |
| Tritanopia (no blue cones) | #71E8E9 | 0.058 |
| Achromatopsia (no color) | #D5D5D5 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99DFFF
#99DFFF
oklch(86.8% 0.083 228.3)
- #FFC5A8
#FFC5A8
oklch(86.8% 0.077 47.8)
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 #99DFFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue #ADD8E6 ΔE 0.037
- Powder Blue #B0E0E6 ΔE 0.042
- Baby Blue #A2CFFE ΔE 0.042
- Robin's Egg Blue #98EFF9 ΔE 0.047
- Celeste #A8DADC ΔE 0.047
- Robin Egg Blue #8AF1FE ΔE 0.049
- Robin's Egg #6DEDFD ΔE 0.050
- Light Sky Blue #87CEFA ΔE 0.051
Use #99DFFF 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.