#99BBF3
Closest named color: Pastel Blue (#A2BFFE). oklch(78.8% 0.088 260.2), rgb(153, 187, 243).
Aa
Black text reads best on this color (10.75:1).
About this color
#99BBF3 is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.088 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.021 away. Black text reads best on it, at 10.75:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 10.75:1 |
| White text | 1.95:1 |
Values
| HEX | #99BBF3 |
| RGB | rgb(153, 187, 243) |
| HSL | hsl(217, 79%, 78%) |
| OKLCH | oklch(78.8% 0.088 260.2) |
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 #99BBF3 | 1.95:1 | Fails | Lc -41.9 | Non-text elements, placeholder text |
| Black text on #99BBF3 | 10.75:1 | AAA | Lc 66.4 | Content text, not long reading |
| #99BBF3 text on white | 1.95:1 | Fails | Lc 37.5 | Non-text elements, placeholder text |
| #99BBF3 text on black | 10.75:1 | AAA | Lc -64.9 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C7DAFA
oklch(88.4% 0.049 260.9)
-
Step 300
300 (this color)
#99BBF3
oklch(78.8% 0.088 260.2)
-
Step 400
400
#6BA0F8
oklch(70.7% 0.141 260.1)
-
Step 500
500
#4385F5
oklch(63.1% 0.181 260.3)
-
Step 600
600
#226BE4
oklch(55.6% 0.197 260.3)
-
Step 700
700
#1559C6
oklch(49.2% 0.183 260.2)
-
Step 800
800
#1449A0
oklch(42.7% 0.152 260.2)
-
Step 900
900
#183E7F
oklch(37.6% 0.118 260.4)
-
Step 950
950
#0F254A
oklch(27% 0.074 260.2)
#99BBF3 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) | #A7BEF6 | 0.020 |
| Deuteranopia (no green cones) | #9EB6F2 | 0.014 |
| Tritanopia (no blue cones) | #7CC7CE | 0.079 |
| Achromatopsia (no color) | #B9B9B9 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BBF3
#99BBF3
oklch(78.8% 0.088 260.2)
- #D8B477
#D8B477
oklch(78.8% 0.089 80.1)
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 #99BBF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.021
- Carolina Blue #8AB8FE ΔE 0.026
- Sky #82CAFC ΔE 0.042
- Lightblue #7BC8F6 ΔE 0.043
- Light Cornflower Blue #98C1D9 ΔE 0.046
- Light Grey Blue #9DBCD4 ΔE 0.046
- Light Sky Blue #87CEFA ΔE 0.050
- Cloudy Blue #ACC2D9 ΔE 0.052
Use #99BBF3 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.