#999FFA
Closest named color: Periwinkle Blue (#8F99FB). oklch(73.5% 0.131 279.8), rgb(153, 159, 250).
Aa
Black text reads best on this color (8.69:1).
About this color
#999FFA is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.131 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.022 away. Black text reads best on it, at 8.69:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.69:1 |
| White text | 2.41:1 |
Values
| HEX | #999FFA |
| RGB | rgb(153, 159, 250) |
| HSL | hsl(236, 91%, 79%) |
| OKLCH | oklch(73.5% 0.131 279.8) |
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 #999FFA | 2.41:1 | Fails | Lc -52.5 | Large or bold text, headings |
| Black text on #999FFA | 8.69:1 | AAA | Lc 56.5 | Large or bold text, headings |
| #999FFA text on white | 2.41:1 | Fails | Lc 47.5 | Large or bold text, headings |
| #999FFA text on black | 8.69:1 | AAA | Lc -54.5 | 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
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F8
oklch(88.6% 0.046 278.6)
-
Step 300
300
#B5BBF5
oklch(80.8% 0.082 279.8)
-
Step 400
400 (this color)
#999FFA
oklch(73.5% 0.131 279.8)
-
Step 500
500
#7879EB
oklch(63% 0.168 280.1)
-
Step 600
600
#625FDA
oklch(55.5% 0.183 279.7)
-
Step 700
700
#524EBD
oklch(49.2% 0.169 279.8)
-
Step 800
800
#434199
oklch(42.8% 0.14 279.7)
-
Step 900
900
#38387A
oklch(37.8% 0.11 279.8)
-
Step 950
950
#202147
oklch(26.9% 0.069 279.5)
#999FFA 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) | #80AAFE | 0.038 |
| Deuteranopia (no green cones) | #7BA3F8 | 0.038 |
| Tritanopia (no blue cones) | #7CB1C1 | 0.115 |
| Achromatopsia (no color) | #A7A7A7 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999FFA
#999FFA
oklch(73.5% 0.131 279.8)
- #BDAA3A
#BDAA3A
oklch(73.4% 0.131 99.5)
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 #999FFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.022
- Perrywinkle #8F8CE7 ΔE 0.055
- Lavender Blue #8B88F8 ΔE 0.063
- Carolina Blue #8AB8FE ΔE 0.064
- Pale Purple #B790D4 ΔE 0.070
- Baby Purple #CA9BF7 ΔE 0.071
- Pastel Purple #CAA0FF ΔE 0.072
- Liliac #C48EFD ΔE 0.072
Use #999FFA 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.