#999DFB
Closest named color: Periwinkle Blue (#8F99FB). oklch(73.1% 0.135 280.6), rgb(153, 157, 251).
Aa
Black text reads best on this color (8.57:1).
About this color
#999DFB is a medium-light, moderately saturated purple. In OKLCH its lightness is 73%, its chroma 0.135 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.018 away. Black text reads best on it, at 8.57:1.
| Hue family | Purples |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.57:1 |
| White text | 2.45:1 |
Values
| HEX | #999DFB |
| RGB | rgb(153, 157, 251) |
| HSL | hsl(238, 92%, 79%) |
| OKLCH | oklch(73.1% 0.135 280.6) |
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 #999DFB | 2.45:1 | Fails | Lc -53.1 | Large or bold text, headings |
| Black text on #999DFB | 8.57:1 | AAA | Lc 55.9 | Large or bold text, headings |
| #999DFB text on white | 2.45:1 | Fails | Lc 48.1 | Large or bold text, headings |
| #999DFB text on black | 8.57:1 | AAA | Lc -53.9 | 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
#E6E8FA
oklch(93.5% 0.024 280.9)
-
Step 200
200
#D3D6F8
oklch(88.5% 0.047 281.4)
-
Step 300
300
#B6BBF7
oklch(80.9% 0.085 280.6)
-
Step 400
400 (this color)
#999DFB
oklch(73.1% 0.135 280.6)
-
Step 500
500
#7978EE
oklch(63.1% 0.173 280.6)
-
Step 600
600
#645DDC
oklch(55.5% 0.188 280.8)
-
Step 700
700
#534CBF
oklch(49% 0.174 280.5)
-
Step 800
800
#443F9B
oklch(42.7% 0.145 280.7)
-
Step 900
900
#39377B
oklch(37.8% 0.112 280.9)
-
Step 950
950
#212148
oklch(27.1% 0.071 280.6)
#999DFB 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) | #7DA9FF | 0.042 |
| Deuteranopia (no green cones) | #78A2F9 | 0.042 |
| Tritanopia (no blue cones) | #7CAFC0 | 0.118 |
| Achromatopsia (no color) | #A5A5A5 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999DFB
#999DFB
oklch(73.1% 0.135 280.6)
- #BBAA33
#BBAA33
oklch(73.2% 0.135 100.9)
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 #999DFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.018
- Perrywinkle #8F8CE7 ΔE 0.051
- Lavender Blue #8B88F8 ΔE 0.058
- Carolina Blue #8AB8FE ΔE 0.070
- Pale Purple #B790D4 ΔE 0.070
- Liliac #C48EFD ΔE 0.070
- Baby Purple #CA9BF7 ΔE 0.071
- Periwinkle #8E82FE ΔE 0.072
Use #999DFB 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.