#819CF3
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.9% 0.131 269.8), rgb(129, 156, 243).
Aa
Black text reads best on this color (7.98:1).
About this color
#819CF3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.131 and its hue 270°. 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 7.98:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.98:1 |
| White text | 2.63:1 |
Values
| HEX | #819CF3 |
| RGB | rgb(129, 156, 243) |
| HSL | hsl(226, 83%, 73%) |
| OKLCH | oklch(70.9% 0.131 269.8) |
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 #819CF3 | 2.63:1 | Fails | Lc -56.3 | Large or bold text, headings |
| Black text on #819CF3 | 7.98:1 | AAA | Lc 52.9 | Large or bold text, headings |
| #819CF3 text on white | 2.63:1 | Fails | Lc 51.2 | Large or bold text, headings |
| #819CF3 text on black | 7.98:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD8F8
oklch(88.4% 0.046 270.4)
-
Step 300
300
#ACBFF7
oklch(81% 0.082 270)
-
Step 400
400 (this color)
#819CF3
oklch(70.9% 0.131 269.8)
-
Step 500
500
#6280EE
oklch(63.1% 0.168 269.6)
-
Step 600
600
#4B66DC
oklch(55.5% 0.182 269.8)
-
Step 700
700
#3D54BF
oklch(49.1% 0.169 269.9)
-
Step 800
800
#32469B
oklch(42.8% 0.14 269.6)
-
Step 900
900
#2B3B7B
oklch(37.6% 0.11 269.8)
-
Step 950
950
#192348
oklch(26.9% 0.07 269.8)
#819CF3 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) | #7BA5F7 | 0.023 |
| Deuteranopia (no green cones) | #709BF1 | 0.021 |
| Tritanopia (no blue cones) | #55AEBC | 0.117 |
| Achromatopsia (no color) | #A0A0A0 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CF3
#819CF3
oklch(70.9% 0.131 269.8)
- #C19C2B
#C19C2B
oklch(70.8% 0.131 89.6)
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 #819CF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.023
- Cornflower Blue #6495ED ΔE 0.041
- Perrywinkle #8F8CE7 ΔE 0.043
- Lavender Blue #8B88F8 ΔE 0.053
- Chefchaouen Blue #4895EF ΔE 0.064
- Soft Blue #6488EA ΔE 0.067
- Periwinkle #8E82FE ΔE 0.071
- Carolina Blue #8AB8FE ΔE 0.075
Use #819CF3 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.