#99AEEF
Closest named color: Carolina Blue (#8AB8FE). oklch(75.9% 0.097 270.2), rgb(153, 174, 239).
Aa
Black text reads best on this color (9.65:1).
About this color
#99AEEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.097 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.032 away. Black text reads best on it, at 9.65:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.65:1 |
| White text | 2.17:1 |
Values
| HEX | #99AEEF |
| RGB | rgb(153, 174, 239) |
| HSL | hsl(225, 73%, 77%) |
| OKLCH | oklch(75.9% 0.097 270.2) |
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 #99AEEF | 2.17:1 | Fails | Lc -47.4 | Large or bold text, headings |
| Black text on #99AEEF | 9.65:1 | AAA | Lc 61.2 | Content text, not long reading |
| #99AEEF text on white | 2.17:1 | Fails | Lc 42.7 | Non-text elements, placeholder text |
| #99AEEF text on black | 9.65:1 | AAA | Lc -59.5 | Large or bold text, headings |
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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FD
oklch(93.5% 0.028 270.4)
-
Step 200
200
#CBD8FE
oklch(88.5% 0.054 270.4)
-
Step 300
300 (this color)
#99AEEF
oklch(75.9% 0.097 270.2)
-
Step 400
400
#7C99FF
oklch(70.6% 0.153 270.2)
-
Step 500
500
#5D7BFF
oklch(63% 0.198 270.2)
-
Step 600
600
#4760EE
oklch(55.6% 0.214 270.2)
-
Step 700
700
#394ED0
oklch(49.2% 0.2 270.1)
-
Step 800
800
#2F41A8
oklch(42.8% 0.166 270.2)
-
Step 900
900
#293985
oklch(37.8% 0.129 270.2)
-
Step 950
950
#18224E
oklch(27.1% 0.082 270.4)
#99AEEF 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) | #99B4F2 | 0.015 |
| Deuteranopia (no green cones) | #91ACED | 0.012 |
| Tritanopia (no blue cones) | #7FBBC5 | 0.087 |
| Achromatopsia (no color) | #B0B0B0 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99AEEF
#99AEEF
oklch(75.9% 0.097 270.2)
- #C8AE66
#C8AE66
oklch(75.8% 0.096 90.2)
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 #99AEEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.032
- Pastel Blue #A2BFFE ΔE 0.048
- Light Grey Blue #9DBCD4 ΔE 0.063
- Periwinkle Blue #8F99FB ΔE 0.064
- Light Cornflower Blue #98C1D9 ΔE 0.068
- Lightblue #7BC8F6 ΔE 0.071
- Sky #82CAFC ΔE 0.073
- Cloudy Blue #ACC2D9 ΔE 0.076
Use #99AEEF 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.