#819AFA
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.9% 0.143 271.3), rgb(129, 154, 250).
Aa
Black text reads best on this color (7.93:1).
About this color
#819AFA is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.143 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.018 away. Black text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.93:1 |
| White text | 2.64:1 |
Values
| HEX | #819AFA |
| RGB | rgb(129, 154, 250) |
| HSL | hsl(228, 92%, 74%) |
| OKLCH | oklch(70.9% 0.143 271.3) |
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 #819AFA | 2.64:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #819AFA | 7.93:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #819AFA text on white | 2.64:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #819AFA text on black | 7.93:1 | AAA | Lc -50.5 | 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
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ABBEFB
oklch(80.9% 0.089 270.9)
-
Step 400
400 (this color)
#819AFA
oklch(70.9% 0.143 271.3)
-
Step 500
500
#637DF6
oklch(63.1% 0.182 271.2)
-
Step 600
600
#4D62E5
oklch(55.6% 0.199 271.5)
-
Step 700
700
#3E50C7
oklch(49% 0.185 271.3)
-
Step 800
800
#3343A1
oklch(42.8% 0.152 271.1)
-
Step 900
900
#2C3980
oklch(37.6% 0.12 271.6)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#819AFA 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) | #75A5FE | 0.029 |
| Deuteranopia (no green cones) | #699AF8 | 0.028 |
| Tritanopia (no blue cones) | #50AEBE | 0.128 |
| Achromatopsia (no color) | #9F9F9F | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819AFA
#819AFA
oklch(70.9% 0.143 271.3)
- #C29D09
#C29D09
oklch(70.9% 0.144 91.6)
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 #819AFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.018
- Cornflower Blue #6495ED ΔE 0.042
- Perrywinkle #8F8CE7 ΔE 0.042
- Lavender Blue #8B88F8 ΔE 0.045
- Periwinkle #8E82FE ΔE 0.061
- Soft Blue #6488EA ΔE 0.064
- Chefchaouen Blue #4895EF ΔE 0.064
- Carolina Blue #8AB8FE ΔE 0.080
Use #819AFA 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.