#999BF0
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.2% 0.123 281.8), rgb(153, 155, 240).
Aa
Black text reads best on this color (8.30:1).
About this color
#999BF0 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 8.30:1.
| Hue family | Purples |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.30:1 |
| White text | 2.52:1 |
Values
| HEX | #999BF0 |
| RGB | rgb(153, 155, 240) |
| HSL | hsl(239, 74%, 77%) |
| OKLCH | oklch(72.2% 0.123 281.8) |
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 #999BF0 | 2.52:1 | Fails | Lc -54.6 | Large or bold text, headings |
| Black text on #999BF0 | 8.30:1 | AAA | Lc 54.5 | Large or bold text, headings |
| #999BF0 text on white | 2.52:1 | Fails | Lc 49.5 | Large or bold text, headings |
| #999BF0 text on black | 8.30:1 | AAA | Lc -52.4 | 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)
#999BF0
oklch(72.2% 0.123 281.8)
-
Step 500
500
#7C7AE5
oklch(63.1% 0.157 281.7)
-
Step 600
600
#6760D3
oklch(55.6% 0.171 282)
-
Step 700
700
#564FB6
oklch(49.1% 0.158 282)
-
Step 800
800
#464194
oklch(42.7% 0.132 281.9)
-
Step 900
900
#3A3876
oklch(37.7% 0.103 281.7)
-
Step 950
950
#222145
oklch(26.9% 0.066 282.3)
#999BF0 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) | #80A6F3 | 0.039 |
| Deuteranopia (no green cones) | #7CA0EE | 0.038 |
| Tritanopia (no blue cones) | #81ABBA | 0.107 |
| Achromatopsia (no color) | #A3A3A3 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999BF0
#999BF0
oklch(72.2% 0.123 281.8)
- #B5A842
#B5A842
oklch(72.3% 0.123 102.1)
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 #999BF0, 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 0.042
- Lavender Blue #8B88F8 ΔE 0.058
- Pale Purple #B790D4 ΔE 0.059
- Cornflower Blue #6495ED ΔE 0.069
- Periwinkle #8E82FE ΔE 0.073
- Liliac #C48EFD ΔE 0.073
- Baby Purple #CA9BF7 ΔE 0.073
Use #999BF0 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.