#999EF1
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.8% 0.12 280.3), rgb(153, 158, 241).
Aa
Black text reads best on this color (8.51:1).
About this color
#999EF1 is a medium-light, moderately saturated purple. In OKLCH its lightness is 73%, its chroma 0.120 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.026 away. Black text reads best on it, at 8.51:1.
| Hue family | Purples |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.51:1 |
| White text | 2.46:1 |
Values
| HEX | #999EF1 |
| RGB | rgb(153, 158, 241) |
| HSL | hsl(237, 76%, 77%) |
| OKLCH | oklch(72.8% 0.12 280.3) |
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 #999EF1 | 2.46:1 | Fails | Lc -53.5 | Large or bold text, headings |
| Black text on #999EF1 | 8.51:1 | AAA | Lc 55.6 | Large or bold text, headings |
| #999EF1 text on white | 2.46:1 | Fails | Lc 48.4 | Large or bold text, headings |
| #999EF1 text on black | 8.51:1 | AAA | Lc -53.6 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F9
oklch(93.7% 0.022 280.3)
-
Step 200
200
#D3D7F5
oklch(88.5% 0.041 279.5)
-
Step 300
300
#B7BCF1
oklch(81% 0.075 280.4)
-
Step 400
400 (this color)
#999EF1
oklch(72.8% 0.12 280.3)
-
Step 500
500
#7A7BE3
oklch(63% 0.154 280.6)
-
Step 600
600
#6462D1
oklch(55.6% 0.167 280.3)
-
Step 700
700
#5350B5
oklch(49% 0.155 280.3)
-
Step 800
800
#444293
oklch(42.6% 0.13 280.5)
-
Step 900
900
#393975
oklch(37.7% 0.1 280.5)
-
Step 950
950
#212244
oklch(27% 0.062 280.1)
#999EF1 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) | #83A8F4 | 0.035 |
| Deuteranopia (no green cones) | #7FA2EF | 0.034 |
| Tritanopia (no blue cones) | #80AEBC | 0.106 |
| Achromatopsia (no color) | #A5A5A5 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999EF1
#999EF1
oklch(72.8% 0.12 280.3)
- #B8A946
#B8A946
oklch(72.8% 0.12 100.7)
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 #999EF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.026
- Perrywinkle #8F8CE7 ΔE 0.050
- Pale Purple #B790D4 ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.064
- Carolina Blue #8AB8FE ΔE 0.066
- Cornflower Blue #6495ED ΔE 0.072
- Baby Purple #CA9BF7 ΔE 0.072
- Pastel Purple #CAA0FF ΔE 0.075
Use #999EF1 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.