#999EE9
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.4% 0.109 280.4), rgb(153, 158, 233).
Aa
Black text reads best on this color (8.42:1).
About this color
#999EE9 is a medium-light, moderately saturated purple. In OKLCH its lightness is 72%, its chroma 0.109 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.035 away. Black text reads best on it, at 8.42:1.
| Hue family | Purples |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.42:1 |
| White text | 2.49:1 |
Values
| HEX | #999EE9 |
| RGB | rgb(153, 158, 233) |
| HSL | hsl(236, 65%, 76%) |
| OKLCH | oklch(72.4% 0.109 280.4) |
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 #999EE9 | 2.49:1 | Fails | Lc -54.0 | Large or bold text, headings |
| Black text on #999EE9 | 8.42:1 | AAA | Lc 55.1 | Large or bold text, headings |
| #999EE9 text on white | 2.49:1 | Fails | Lc 48.9 | Large or bold text, headings |
| #999EE9 text on black | 8.42:1 | AAA | Lc -53.1 | 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
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D4D7F2
oklch(88.5% 0.037 280.6)
-
Step 300
300
#B8BCEC
oklch(80.8% 0.068 281)
-
Step 400
400 (this color)
#999EE9
oklch(72.4% 0.109 280.4)
-
Step 500
500
#7B7DDB
oklch(63% 0.139 280.7)
-
Step 600
600
#6565C9
oklch(55.7% 0.151 280.3)
-
Step 700
700
#5453AD
oklch(49.1% 0.14 280.4)
-
Step 800
800
#45448C
oklch(42.6% 0.116 280.9)
-
Step 900
900
#393A70
oklch(37.6% 0.091 280.3)
-
Step 950
950
#212242
oklch(26.9% 0.059 280.3)
#999EE9 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) | #87A7EC | 0.030 |
| Deuteranopia (no green cones) | #83A1E7 | 0.029 |
| Tritanopia (no blue cones) | #83ACB9 | 0.095 |
| Achromatopsia (no color) | #A4A4A4 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999EE9
#999EE9
oklch(72.4% 0.109 280.4)
- #B5A852
#B5A852
oklch(72.5% 0.109 100.8)
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 #999EE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.035
- Perrywinkle #8F8CE7 ΔE 0.050
- Pale Purple #B790D4 ΔE 0.056
- Carolina Blue #8AB8FE ΔE 0.067
- Lavender Blue #8B88F8 ΔE 0.070
- Cornflower Blue #6495ED ΔE 0.072
- Baby Purple #CA9BF7 ΔE 0.076
- Pastel Purple #CAA0FF ΔE 0.080
Use #999EE9 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.