#999CF3
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.5% 0.125 281.3), rgb(153, 156, 243).
Aa
Black text reads best on this color (8.40:1).
About this color
#999CF3 is a medium-light, moderately saturated purple. In OKLCH its lightness is 73%, its chroma 0.125 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.021 away. Black text reads best on it, at 8.40:1.
| Hue family | Purples |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.40:1 |
| White text | 2.49:1 |
Values
| HEX | #999CF3 |
| RGB | rgb(153, 156, 243) |
| HSL | hsl(238, 79%, 78%) |
| OKLCH | oklch(72.5% 0.125 281.3) |
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 #999CF3 | 2.49:1 | Fails | Lc -54.0 | Large or bold text, headings |
| Black text on #999CF3 | 8.40:1 | AAA | Lc 55.0 | Large or bold text, headings |
| #999CF3 text on white | 2.49:1 | Fails | Lc 49.0 | Large or bold text, headings |
| #999CF3 text on black | 8.40:1 | AAA | Lc -53.0 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D3D6F6
oklch(88.4% 0.044 281.2)
-
Step 300
300
#B7BBF3
oklch(80.8% 0.079 281.3)
-
Step 400
400 (this color)
#999CF3
oklch(72.5% 0.125 281.3)
-
Step 500
500
#7B7AE7
oklch(63.2% 0.16 281.2)
-
Step 600
600
#6660D5
oklch(55.7% 0.174 281.4)
-
Step 700
700
#554EB9
oklch(49.1% 0.163 281.5)
-
Step 800
800
#454195
oklch(42.7% 0.134 281.2)
-
Step 900
900
#3A3877
oklch(37.8% 0.105 281.6)
-
Step 950
950
#212146
oklch(26.9% 0.067 280.9)
#999CF3 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) | #80A7F6 | 0.039 |
| Deuteranopia (no green cones) | #7BA1F1 | 0.039 |
| Tritanopia (no blue cones) | #80ADBC | 0.110 |
| Achromatopsia (no color) | #A4A4A4 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999CF3
#999CF3
oklch(72.5% 0.125 281.3)
- #B7A83F
#B7A83F
oklch(72.5% 0.125 101.1)
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 #999CF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.021
- Perrywinkle #8F8CE7 ΔE 0.045
- Lavender Blue #8B88F8 ΔE 0.058
- Pale Purple #B790D4 ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.070
- Carolina Blue #8AB8FE ΔE 0.071
- Liliac #C48EFD ΔE 0.072
- Baby Purple #CA9BF7 ΔE 0.072
Use #999CF3 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.