#999AEF
Closest named color: Periwinkle Blue (#8F99FB). oklch(72% 0.123 282.4), rgb(153, 154, 239).
Aa
Black text reads best on this color (8.22:1).
About this color
#999AEF is a medium-light, moderately saturated purple. In OKLCH its lightness is 72%, its chroma 0.123 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.023 away. Black text reads best on it, at 8.22:1.
| Hue family | Purples |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.22:1 |
| White text | 2.55:1 |
Values
| HEX | #999AEF |
| RGB | rgb(153, 154, 239) |
| HSL | hsl(239, 73%, 77%) |
| OKLCH | oklch(72% 0.123 282.4) |
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 #999AEF | 2.55:1 | Fails | Lc -55.0 | Large or bold text, headings |
| Black text on #999AEF | 8.22:1 | AAA | Lc 54.1 | Large or bold text, headings |
| #999AEF text on white | 2.55:1 | Fails | Lc 49.9 | Large or bold text, headings |
| #999AEF text on black | 8.22:1 | AAA | Lc -52.0 | 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
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D4D6F5
oklch(88.4% 0.043 282.6)
-
Step 300
300
#B8BBF2
oklch(80.9% 0.077 282.1)
-
Step 400
400 (this color)
#999AEF
oklch(72% 0.123 282.4)
-
Step 500
500
#7D7AE4
oklch(63.1% 0.156 282.3)
-
Step 600
600
#6860D2
oklch(55.6% 0.17 282.5)
-
Step 700
700
#574FB6
oklch(49.2% 0.158 282.4)
-
Step 800
800
#474193
oklch(42.7% 0.131 282.7)
-
Step 900
900
#3B3875
oklch(37.7% 0.101 282.6)
-
Step 950
950
#222145
oklch(26.9% 0.066 282.3)
#999AEF 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) | #7FA5F2 | 0.040 |
| Deuteranopia (no green cones) | #7B9FED | 0.039 |
| Tritanopia (no blue cones) | #81AAB9 | 0.107 |
| Achromatopsia (no color) | #A2A2A2 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999AEF
#999AEF
oklch(72% 0.123 282.4)
- #B3A741
#B3A741
oklch(71.9% 0.123 102.6)
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 #999AEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.023
- Perrywinkle #8F8CE7 ΔE 0.040
- Lavender Blue #8B88F8 ΔE 0.056
- Pale Purple #B790D4 ΔE 0.057
- Cornflower Blue #6495ED ΔE 0.068
- Periwinkle #8E82FE ΔE 0.071
- Liliac #C48EFD ΔE 0.073
- Baby Purple #CA9BF7 ΔE 0.074
Use #999AEF 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.