#99A3FF
Closest named color: Periwinkle Blue (#8F99FB). oklch(74.5% 0.133 277.9), rgb(153, 163, 255).
Aa
Black text reads best on this color (9.03:1).
About this color
#99A3FF is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.133 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.030 away. Black text reads best on it, at 9.03:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 9.03:1 |
| White text | 2.32:1 |
Values
| HEX | #99A3FF |
| RGB | rgb(153, 163, 255) |
| HSL | hsl(234, 100%, 80%) |
| OKLCH | oklch(74.5% 0.133 277.9) |
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 #99A3FF | 2.32:1 | Fails | Lc -50.6 | Large or bold text, headings |
| Black text on #99A3FF | 9.03:1 | AAA | Lc 58.2 | Large or bold text, headings |
| #99A3FF text on white | 2.32:1 | Fails | Lc 45.7 | Large or bold text, headings |
| #99A3FF text on black | 9.03:1 | AAA | Lc -56.3 | 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 400.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D1D7F8
oklch(88.5% 0.046 277.3)
-
Step 300
300
#B3BCF6
oklch(80.9% 0.083 277.5)
-
Step 400
400 (this color)
#99A3FF
oklch(74.5% 0.133 277.9)
-
Step 500
500
#747AED
oklch(63% 0.17 278.1)
-
Step 600
600
#5E60DC
oklch(55.6% 0.185 277.8)
-
Step 700
700
#4E4FBF
oklch(49.2% 0.171 277.7)
-
Step 800
800
#40419A
oklch(42.7% 0.142 278.1)
-
Step 900
900
#36387B
oklch(37.7% 0.111 278.3)
-
Step 950
950
#1F2148
oklch(26.9% 0.071 278.2)
#99A3FF 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) | #84AEFF | 0.036 |
| Deuteranopia (no green cones) | #7DA6FD | 0.035 |
| Tritanopia (no blue cones) | #7AB5C5 | 0.117 |
| Achromatopsia (no color) | #AAAAAA | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99A3FF
#99A3FF
oklch(74.5% 0.133 277.9)
- #C3AD3A
#C3AD3A
oklch(74.6% 0.133 98.2)
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 #99A3FF, closest first.
No curated palette has a color within ΔE 0.04 of #99A3FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.030
- Carolina Blue #8AB8FE ΔE 0.056
- Perrywinkle #8F8CE7 ΔE 0.065
- Pastel Purple #CAA0FF ΔE 0.070
- Baby Purple #CA9BF7 ΔE 0.071
- Lavender Blue #8B88F8 ΔE 0.072
- Lilac #CEA2FD ΔE 0.076
- Liliac #C48EFD ΔE 0.076
Use #99A3FF 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.