#819DF2
Closest named color: Periwinkle Blue (#8F99FB). oklch(71% 0.129 269.1), rgb(129, 157, 242).
Aa
Black text reads best on this color (8.03:1).
About this color
#819DF2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.129 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.025 away. Black text reads best on it, at 8.03:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.03:1 |
| White text | 2.61:1 |
Values
| HEX | #819DF2 |
| RGB | rgb(129, 157, 242) |
| HSL | hsl(225, 81%, 73%) |
| OKLCH | oklch(71% 0.129 269.1) |
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 #819DF2 | 2.61:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #819DF2 | 8.03:1 | AAA | Lc 53.1 | Large or bold text, headings |
| #819DF2 text on white | 2.61:1 | Fails | Lc 50.9 | Large or bold text, headings |
| #819DF2 text on black | 8.03:1 | AAA | Lc -51.0 | 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
#CDD9F8
oklch(88.6% 0.045 268.7)
-
Step 300
300
#ABBFF6
oklch(80.9% 0.081 269)
-
Step 400
400 (this color)
#819DF2
oklch(71% 0.129 269.1)
-
Step 500
500
#6281EC
oklch(63.2% 0.164 269.2)
-
Step 600
600
#4A67DA
oklch(55.5% 0.179 269.2)
-
Step 700
700
#3C55BD
oklch(49.1% 0.166 269.2)
-
Step 800
800
#314699
oklch(42.6% 0.138 269.1)
-
Step 900
900
#2B3C7A
oklch(37.7% 0.107 269.2)
-
Step 950
950
#192447
oklch(27.1% 0.067 268.5)
#819DF2 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) | #7DA5F5 | 0.020 |
| Deuteranopia (no green cones) | #729CF0 | 0.018 |
| Tritanopia (no blue cones) | #55AFBC | 0.116 |
| Achromatopsia (no color) | #A0A0A0 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819DF2
#819DF2
oklch(71% 0.129 269.1)
- #C29D30
#C29D30
oklch(71.1% 0.129 89.2)
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 #819DF2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.025
- Cornflower Blue #6495ED ΔE 0.042
- Perrywinkle #8F8CE7 ΔE 0.045
- Lavender Blue #8B88F8 ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.065
- Soft Blue #6488EA ΔE 0.069
- Carolina Blue #8AB8FE ΔE 0.072
- Periwinkle #8E82FE ΔE 0.074
Use #819DF2 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.