#999DDD
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.7% 0.093 281), rgb(153, 157, 221).
Aa
Black text reads best on this color (8.22:1).
About this color
#999DDD is a medium-light, moderately saturated purple. In OKLCH its lightness is 72%, its chroma 0.093 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.050 away. Black text reads best on it, at 8.22:1.
| Hue family | Purples |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.22:1 |
| White text | 2.55:1 |
Values
| HEX | #999DDD |
| RGB | rgb(153, 157, 221) |
| HSL | hsl(236, 50%, 73%) |
| OKLCH | oklch(71.7% 0.093 281) |
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 #999DDD | 2.55:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #999DDD | 8.22:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #999DDD text on white | 2.55:1 | Fails | Lc 50.0 | Large or bold text, headings |
| #999DDD 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D5D7EF
oklch(88.5% 0.033 281.9)
-
Step 300
300
#B9BDE6
oklch(80.9% 0.058 280.6)
-
Step 400
400 (this color)
#999DDD
oklch(71.7% 0.093 281)
-
Step 500
500
#7D80CF
oklch(63.1% 0.118 280.8)
-
Step 600
600
#6768BC
oklch(55.6% 0.128 280.9)
-
Step 700
700
#5656A3
oklch(49.1% 0.121 281)
-
Step 800
800
#464784
oklch(42.8% 0.099 280.6)
-
Step 900
900
#3B3C6A
oklch(37.8% 0.078 281.1)
-
Step 950
950
#22233E
oklch(26.9% 0.05 280.9)
#999DDD 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) | #8AA4E0 | 0.025 |
| Deuteranopia (no green cones) | #87A0DB | 0.025 |
| Tritanopia (no blue cones) | #88A9B4 | 0.082 |
| Achromatopsia (no color) | #A2A2A2 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999DDD
#999DDD
oklch(71.7% 0.093 281)
- #B0A65F
#B0A65F
oklch(71.8% 0.093 101.3)
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 #999DDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.050
- Pale Purple #B790D4 ΔE 0.051
- Perrywinkle #8F8CE7 ΔE 0.054
- Cool Gray #8D99AE ΔE 0.072
- Carolina Blue #8AB8FE ΔE 0.075
- Bluey Grey #89A0B0 ΔE 0.075
- Cornflower Blue #6495ED ΔE 0.075
- Cool Steel #97A7B3 ΔE 0.076
Use #999DDD 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.