#8399FF
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.1% 0.151 272.8), rgb(131, 153, 255).
Aa
Black text reads best on this color (7.96:1).
About this color
#8399FF is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.151 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.016 away. Black text reads best on it, at 7.96:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.96:1 |
| White text | 2.63:1 |
Values
| HEX | #8399FF |
| RGB | rgb(131, 153, 255) |
| HSL | hsl(229, 100%, 76%) |
| OKLCH | oklch(71.1% 0.151 272.8) |
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 #8399FF | 2.63:1 | Fails | Lc -56.4 | Large or bold text, headings |
| Black text on #8399FF | 7.96:1 | AAA | Lc 52.8 | Large or bold text, headings |
| #8399FF text on white | 2.63:1 | Fails | Lc 51.2 | Large or bold text, headings |
| #8399FF text on black | 7.96:1 | AAA | Lc -50.7 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CDD8FD
oklch(88.6% 0.052 272.2)
-
Step 300
300
#ACBDFE
oklch(80.9% 0.094 272.8)
-
Step 400
400 (this color)
#8399FF
oklch(71.1% 0.151 272.8)
-
Step 500
500
#657AFC
oklch(63.1% 0.193 272.7)
-
Step 600
600
#505FEB
oklch(55.7% 0.209 272.9)
-
Step 700
700
#414DCC
oklch(49.1% 0.194 272.8)
-
Step 800
800
#3540A5
oklch(42.6% 0.161 272.8)
-
Step 900
900
#2D3883
oklch(37.7% 0.126 272.6)
-
Step 950
950
#1A214D
oklch(26.9% 0.081 272.9)
#8399FF 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) | #71A5FF | 0.035 |
| Deuteranopia (no green cones) | #659AFD | 0.034 |
| Tritanopia (no blue cones) | #51AFC0 | 0.134 |
| Achromatopsia (no color) | #9F9F9F | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8399FF
#8399FF
oklch(71.1% 0.151 272.8)
- #C19E00
#C19E00
oklch(71% 0.145 92.9)
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 #8399FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.016
- Lavender Blue #8B88F8 ΔE 0.042
- Perrywinkle #8F8CE7 ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.047
- Periwinkle #8E82FE ΔE 0.057
- Soft Blue #6488EA ΔE 0.066
- Chefchaouen Blue #4895EF ΔE 0.069
- Carolina Blue #8AB8FE ΔE 0.083
Use #8399FF 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.