#99A3EF
Closest named color: Periwinkle Blue (#8F99FB). oklch(73.7% 0.11 277.6), rgb(153, 163, 239).
Aa
Black text reads best on this color (8.83:1).
About this color
#99A3EF is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.110 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.038 away. Black text reads best on it, at 8.83:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.83:1 |
| White text | 2.37:1 |
Values
| HEX | #99A3EF |
| RGB | rgb(153, 163, 239) |
| HSL | hsl(233, 73%, 77%) |
| OKLCH | oklch(73.7% 0.11 277.6) |
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 #99A3EF | 2.37:1 | Fails | Lc -51.7 | Large or bold text, headings |
| Black text on #99A3EF | 8.83:1 | AAA | Lc 57.2 | Large or bold text, headings |
| #99A3EF text on white | 2.37:1 | Fails | Lc 46.8 | Large or bold text, headings |
| #99A3EF text on black | 8.83:1 | AAA | Lc -55.3 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F3
oklch(88.4% 0.039 277.6)
-
Step 300
300
#B5BDEE
oklch(80.9% 0.07 277.5)
-
Step 400
400 (this color)
#99A3EF
oklch(73.7% 0.11 277.6)
-
Step 500
500
#767FDD
oklch(63.2% 0.14 277.4)
-
Step 600
600
#6066CB
oklch(55.6% 0.154 277.6)
-
Step 700
700
#4F54AF
oklch(49% 0.142 277.4)
-
Step 800
800
#41458E
oklch(42.6% 0.119 277.7)
-
Step 900
900
#373B71
oklch(37.7% 0.091 277.9)
-
Step 950
950
#202342
oklch(27% 0.057 277.6)
#99A3EF 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) | #8BACF2 | 0.027 |
| Deuteranopia (no green cones) | #85A5ED | 0.026 |
| Tritanopia (no blue cones) | #80B2BE | 0.099 |
| Achromatopsia (no color) | #A8A8A8 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99A3EF
#99A3EF
oklch(73.7% 0.11 277.6)
- #BDAA53
#BDAA53
oklch(73.7% 0.11 97.2)
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 #99A3EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.038
- Carolina Blue #8AB8FE ΔE 0.054
- Perrywinkle #8F8CE7 ΔE 0.062
- Pale Purple #B790D4 ΔE 0.065
- Baby Purple #CA9BF7 ΔE 0.074
- Pastel Blue #A2BFFE ΔE 0.074
- Pastel Purple #CAA0FF ΔE 0.075
- Lavender Blue #8B88F8 ΔE 0.078
Use #99A3EF 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.