#819EFA
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.7% 0.138 269.4), rgb(129, 158, 250).
Aa
Black text reads best on this color (8.20:1).
About this color
#819EFA is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.138 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.021 away. Black text reads best on it, at 8.20:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.20:1 |
| White text | 2.55:1 |
Values
| HEX | #819EFA |
| RGB | rgb(129, 158, 250) |
| HSL | hsl(226, 92%, 74%) |
| OKLCH | oklch(71.7% 0.138 269.4) |
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 #819EFA | 2.55:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #819EFA | 8.20:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #819EFA text on white | 2.55:1 | Fails | Lc 50.0 | Large or bold text, headings |
| #819EFA text on black | 8.20:1 | AAA | Lc -52.0 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#AABFF9
oklch(80.9% 0.086 269)
-
Step 400
400 (this color)
#819EFA
oklch(71.7% 0.138 269.4)
-
Step 500
500
#607FF3
oklch(63.1% 0.177 269.5)
-
Step 600
600
#4865E2
oklch(55.6% 0.192 269.3)
-
Step 700
700
#3A53C4
oklch(49.1% 0.178 269.3)
-
Step 800
800
#30449F
oklch(42.6% 0.149 269.6)
-
Step 900
900
#2A3B7E
oklch(37.8% 0.115 269.5)
-
Step 950
950
#18234A
oklch(27% 0.074 269.2)
#819EFA 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) | #7BA7FE | 0.023 |
| Deuteranopia (no green cones) | #6E9DF8 | 0.023 |
| Tritanopia (no blue cones) | #4FB1C0 | 0.124 |
| Achromatopsia (no color) | #A2A2A2 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819EFA
#819EFA
oklch(71.7% 0.138 269.4)
- #C69E20
#C69E20
oklch(71.6% 0.138 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 #819EFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.021
- Cornflower Blue #6495ED ΔE 0.046
- Perrywinkle #8F8CE7 ΔE 0.050
- Lavender Blue #8B88F8 ΔE 0.055
- Chefchaouen Blue #4895EF ΔE 0.068
- Carolina Blue #8AB8FE ΔE 0.070
- Periwinkle #8E82FE ΔE 0.071
- Soft Blue #6488EA ΔE 0.072
Use #819EFA 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.