#999EF4
Closest named color: Periwinkle Blue (#8F99FB). oklch(73% 0.124 280.3), rgb(153, 158, 244).
Aa
Black text reads best on this color (8.55:1).
About this color
#999EF4 is a medium-light, moderately saturated purple. In OKLCH its lightness is 73%, its chroma 0.124 and its hue 280°. 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 8.55:1.
| Hue family | Purples |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.55:1 |
| White text | 2.45:1 |
Values
| HEX | #999EF4 |
| RGB | rgb(153, 158, 244) |
| HSL | hsl(237, 81%, 78%) |
| OKLCH | oklch(73% 0.124 280.3) |
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 #999EF4 | 2.45:1 | Fails | Lc -53.3 | Large or bold text, headings |
| Black text on #999EF4 | 8.55:1 | AAA | Lc 55.8 | Large or bold text, headings |
| #999EF4 text on white | 2.45:1 | Fails | Lc 48.2 | Large or bold text, headings |
| #999EF4 text on black | 8.55:1 | AAA | Lc -53.8 | 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
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D3D7F6
oklch(88.6% 0.043 279.7)
-
Step 300
300
#B6BCF3
oklch(81% 0.078 279.7)
-
Step 400
400 (this color)
#999EF4
oklch(73% 0.124 280.3)
-
Step 500
500
#797BE6
oklch(63.2% 0.158 280.1)
-
Step 600
600
#6461D4
oklch(55.6% 0.172 280.4)
-
Step 700
700
#534FB8
oklch(49% 0.161 280.4)
-
Step 800
800
#444295
oklch(42.8% 0.133 280.3)
-
Step 900
900
#393877
oklch(37.7% 0.105 280.8)
-
Step 950
950
#212245
oklch(27.1% 0.064 280)
#999EF4 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) | #82A9F7 | 0.037 |
| Deuteranopia (no green cones) | #7DA2F2 | 0.036 |
| Tritanopia (no blue cones) | #7FAFBE | 0.109 |
| Achromatopsia (no color) | #A5A5A5 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999EF4
#999EF4
oklch(73% 0.124 280.3)
- #BAA942
#BAA942
oklch(73% 0.124 99.9)
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 #999EF4, 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 0.050
- Lavender Blue #8B88F8 ΔE 0.063
- Pale Purple #B790D4 ΔE 0.064
- Carolina Blue #8AB8FE ΔE 0.066
- Baby Purple #CA9BF7 ΔE 0.072
- Cornflower Blue #6495ED ΔE 0.072
- Liliac #C48EFD ΔE 0.074
Use #999EF4 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.