#819FEF
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.3% 0.122 267.6), rgb(129, 159, 239).
Aa
Black text reads best on this color (8.13:1).
About this color
#819FEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.122 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.031 away. Black text reads best on it, at 8.13:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.13:1 |
| White text | 2.58:1 |
Values
| HEX | #819FEF |
| RGB | rgb(129, 159, 239) |
| HSL | hsl(224, 77%, 72%) |
| OKLCH | oklch(71.3% 0.122 267.6) |
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 #819FEF | 2.58:1 | Fails | Lc -55.5 | Large or bold text, headings |
| Black text on #819FEF | 8.13:1 | AAA | Lc 53.7 | Large or bold text, headings |
| #819FEF text on white | 2.58:1 | Fails | Lc 50.3 | Large or bold text, headings |
| #819FEF text on black | 8.13:1 | AAA | Lc -51.6 | 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
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ABC0F3
oklch(81% 0.076 267.3)
-
Step 400
400 (this color)
#819FEF
oklch(71.3% 0.122 267.6)
-
Step 500
500
#6083E7
oklch(63.2% 0.155 267.4)
-
Step 600
600
#486AD5
oklch(55.6% 0.169 267.4)
-
Step 700
700
#3A57B9
oklch(49.1% 0.158 267.8)
-
Step 800
800
#304896
oklch(42.8% 0.131 267.7)
-
Step 900
900
#2A3D77
oklch(37.7% 0.102 267.7)
-
Step 950
950
#192446
oklch(27% 0.065 268.3)
#819FEF 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) | #82A6F2 | 0.018 |
| Deuteranopia (no green cones) | #769DED | 0.015 |
| Tritanopia (no blue cones) | #57B0BC | 0.110 |
| Achromatopsia (no color) | #A1A1A1 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819FEF
#819FEF
oklch(71.3% 0.122 267.6)
- #C39D3B
#C39D3B
oklch(71.3% 0.122 87.3)
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 #819FEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.031
- Cornflower Blue #6495ED ΔE 0.045
- Perrywinkle #8F8CE7 ΔE 0.049
- Lavender Blue #8B88F8 ΔE 0.063
- Chefchaouen Blue #4895EF ΔE 0.067
- Carolina Blue #8AB8FE ΔE 0.068
- Soft Blue #6488EA ΔE 0.073
- Periwinkle #8E82FE ΔE 0.081
Use #819FEF 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.