#99BBEF
Closest named color: Pastel Blue (#A2BFFE). oklch(78.6% 0.083 258.7), rgb(153, 187, 239).
Aa
Black text reads best on this color (10.70:1).
About this color
#99BBEF is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.083 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.026 away. Black text reads best on it, at 10.70:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 10.70:1 |
| White text | 1.96:1 |
Values
| HEX | #99BBEF |
| RGB | rgb(153, 187, 239) |
| HSL | hsl(216, 73%, 77%) |
| OKLCH | oklch(78.6% 0.083 258.7) |
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 #99BBEF | 1.96:1 | Fails | Lc -42.1 | Non-text elements, placeholder text |
| Black text on #99BBEF | 10.70:1 | AAA | Lc 66.2 | Content text, not long reading |
| #99BBEF text on white | 1.96:1 | Fails | Lc 37.7 | Non-text elements, placeholder text |
| #99BBEF text on black | 10.70:1 | AAA | Lc -64.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF8
oklch(88.6% 0.046 257.6)
-
Step 300
300 (this color)
#99BBEF
oklch(78.6% 0.083 258.7)
-
Step 400
400
#6CA1F3
oklch(70.7% 0.133 258.8)
-
Step 500
500
#4387EE
oklch(63.1% 0.17 258.6)
-
Step 600
600
#226EDD
oklch(55.7% 0.185 258.8)
-
Step 700
700
#145BC0
oklch(49.1% 0.172 258.8)
-
Step 800
800
#144B9B
oklch(42.7% 0.142 258.7)
-
Step 900
900
#183F7B
oklch(37.6% 0.111 259)
-
Step 950
950
#0F2648
oklch(27.1% 0.07 258.2)
#99BBEF 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) | #A9BEF1 | 0.022 |
| Deuteranopia (no green cones) | #9FB5EE | 0.016 |
| Tritanopia (no blue cones) | #7EC6CD | 0.073 |
| Achromatopsia (no color) | #B9B9B9 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BBEF
#99BBEF
oklch(78.6% 0.083 258.7)
- #D6B37B
#D6B37B
oklch(78.5% 0.083 78.8)
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 #99BBEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.026
- Carolina Blue #8AB8FE ΔE 0.030
- Light Grey Blue #9DBCD4 ΔE 0.040
- Light Cornflower Blue #98C1D9 ΔE 0.040
- Lightblue #7BC8F6 ΔE 0.042
- Sky #82CAFC ΔE 0.043
- Cloudy Blue #ACC2D9 ΔE 0.048
- Light Steel Blue #B0C4DE ΔE 0.049
Use #99BBEF 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.