#999BF3
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.3% 0.127 281.7), rgb(153, 155, 243).
Aa
Black text reads best on this color (8.33:1).
About this color
#999BF3 is a medium-light, moderately saturated purple. In OKLCH its lightness is 72%, its chroma 0.127 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.019 away. Black text reads best on it, at 8.33:1.
| Hue family | Purples |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.33:1 |
| White text | 2.51:1 |
Values
| HEX | #999BF3 |
| RGB | rgb(153, 155, 243) |
| HSL | hsl(239, 79%, 78%) |
| OKLCH | oklch(72.3% 0.127 281.7) |
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 #999BF3 | 2.51:1 | Fails | Lc -54.4 | Large or bold text, headings |
| Black text on #999BF3 | 8.33:1 | AAA | Lc 54.7 | Large or bold text, headings |
| #999BF3 text on white | 2.51:1 | Fails | Lc 49.3 | Large or bold text, headings |
| #999BF3 text on black | 8.33:1 | AAA | Lc -52.6 | 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
#D4D6F6
oklch(88.5% 0.044 282.6)
-
Step 300
300
#B8BBF3
oklch(80.9% 0.079 282.1)
-
Step 400
400 (this color)
#999BF3
oklch(72.3% 0.127 281.7)
-
Step 500
500
#7C79E8
oklch(63.1% 0.163 281.9)
-
Step 600
600
#665FD6
oklch(55.5% 0.177 281.6)
-
Step 700
700
#554EB9
oklch(49.1% 0.163 281.5)
-
Step 800
800
#464096
oklch(42.7% 0.136 282.1)
-
Step 900
900
#3A3877
oklch(37.8% 0.105 281.6)
-
Step 950
950
#222146
oklch(27% 0.067 282.1)
#999BF3 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) | #7EA6F7 | 0.041 |
| Deuteranopia (no green cones) | #7AA0F1 | 0.040 |
| Tritanopia (no blue cones) | #80ACBC | 0.110 |
| Achromatopsia (no color) | #A3A3A3 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999BF3
#999BF3
oklch(72.3% 0.127 281.7)
- #B6A83D
#B6A83D
oklch(72.4% 0.127 101.8)
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 #999BF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.019
- Perrywinkle #8F8CE7 ΔE 0.043
- Lavender Blue #8B88F8 ΔE 0.056
- Pale Purple #B790D4 ΔE 0.061
- Cornflower Blue #6495ED ΔE 0.070
- Periwinkle #8E82FE ΔE 0.071
- Liliac #C48EFD ΔE 0.071
- Baby Purple #CA9BF7 ΔE 0.073
Use #999BF3 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.