#819AEA
Closest named color: Periwinkle Blue (#8F99FB). oklch(70% 0.121 269.9), rgb(129, 154, 234).
Aa
Black text reads best on this color (7.74:1).
About this color
#819AEA is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.121 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.032 away. Black text reads best on it, at 7.74:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.74:1 |
| White text | 2.71:1 |
Values
| HEX | #819AEA |
| RGB | rgb(129, 154, 234) |
| HSL | hsl(226, 71%, 71%) |
| OKLCH | oklch(70% 0.121 269.9) |
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 #819AEA | 2.71:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #819AEA | 7.74:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #819AEA text on white | 2.71:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #819AEA text on black | 7.74:1 | AAA | Lc -49.4 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F6
oklch(88.6% 0.042 269)
-
Step 300
300
#ADBFF2
oklch(80.9% 0.075 269.5)
-
Step 400
400 (this color)
#819AEA
oklch(70% 0.121 269.9)
-
Step 500
500
#6581E6
oklch(63% 0.155 269.9)
-
Step 600
600
#4E68D4
oklch(55.5% 0.168 270)
-
Step 700
700
#3F56B8
oklch(49% 0.157 269.8)
-
Step 800
800
#344795
oklch(42.7% 0.13 269.8)
-
Step 900
900
#2D3C77
oklch(37.6% 0.102 270.2)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#819AEA 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) | #7DA2ED | 0.021 |
| Deuteranopia (no green cones) | #7399E8 | 0.018 |
| Tritanopia (no blue cones) | #5BABB7 | 0.109 |
| Achromatopsia (no color) | #9D9D9D | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819AEA
#819AEA
oklch(70% 0.121 269.9)
- #BC9A38
#BC9A38
oklch(69.9% 0.121 89.4)
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 #819AEA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.032
- Perrywinkle #8F8CE7 ΔE 0.038
- Cornflower Blue #6495ED ΔE 0.038
- Lavender Blue #8B88F8 ΔE 0.055
- Chefchaouen Blue #4895EF ΔE 0.062
- Soft Blue #6488EA ΔE 0.063
- Periwinkle #8E82FE ΔE 0.073
- Dark Sky Blue #448EE4 ΔE 0.076
Use #819AEA 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.