#99BBF5
Closest named color: Pastel Blue (#A2BFFE). oklch(78.8% 0.091 260.9), rgb(153, 187, 245).
Aa
Black text reads best on this color (10.78:1).
About this color
#99BBF5 is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.091 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.020 away. Black text reads best on it, at 10.78:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 10.78:1 |
| White text | 1.94:1 |
Values
| HEX | #99BBF5 |
| RGB | rgb(153, 187, 245) |
| HSL | hsl(218, 82%, 78%) |
| OKLCH | oklch(78.8% 0.091 260.9) |
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 #99BBF5 | 1.94:1 | Fails | Lc -41.7 | Non-text elements, placeholder text |
| Black text on #99BBF5 | 10.78:1 | AAA | Lc 66.5 | Content text, not long reading |
| #99BBF5 text on white | 1.94:1 | Fails | Lc 37.4 | Non-text elements, placeholder text |
| #99BBF5 text on black | 10.78:1 | AAA | Lc -65.1 | 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
#C7DAFB
oklch(88.5% 0.05 261.5)
-
Step 300
300 (this color)
#99BBF5
oklch(78.8% 0.091 260.9)
-
Step 400
400
#6B9FFB
oklch(70.7% 0.146 261.1)
-
Step 500
500
#4384F8
oklch(63.1% 0.186 260.9)
-
Step 600
600
#236AE7
oklch(55.6% 0.202 260.9)
-
Step 700
700
#1657C9
oklch(49.1% 0.189 261)
-
Step 800
800
#1548A2
oklch(42.6% 0.156 260.9)
-
Step 900
900
#183E81
oklch(37.8% 0.121 260.8)
-
Step 950
950
#0F254B
oklch(27% 0.076 260.5)
#99BBF5 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) | #A7BEF8 | 0.020 |
| Deuteranopia (no green cones) | #9DB6F4 | 0.013 |
| Tritanopia (no blue cones) | #7BC7CF | 0.081 |
| Achromatopsia (no color) | #BABABA | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BBF5
#99BBF5
oklch(78.8% 0.091 260.9)
- #D8B475
#D8B475
oklch(78.8% 0.091 80.8)
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 #99BBF5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.020
- Carolina Blue #8AB8FE ΔE 0.024
- Sky #82CAFC ΔE 0.042
- Lightblue #7BC8F6 ΔE 0.044
- Light Cornflower Blue #98C1D9 ΔE 0.049
- Light Grey Blue #9DBCD4 ΔE 0.049
- Light Sky Blue #87CEFA ΔE 0.051
- Baby Blue #A2CFFE ΔE 0.054
Use #99BBF5 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.