#819BF7
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.9% 0.138 270.6), rgb(129, 155, 247).
Aa
Black text reads best on this color (7.96:1).
About this color
#819BF7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.138 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.019 away. Black text reads best on it, at 7.96:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.96:1 |
| White text | 2.63:1 |
Values
| HEX | #819BF7 |
| RGB | rgb(129, 155, 247) |
| HSL | hsl(227, 88%, 74%) |
| OKLCH | oklch(70.9% 0.138 270.6) |
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 #819BF7 | 2.63:1 | Fails | Lc -56.4 | Large or bold text, headings |
| Black text on #819BF7 | 7.96:1 | AAA | Lc 52.8 | Large or bold text, headings |
| #819BF7 text on white | 2.63:1 | Fails | Lc 51.2 | Large or bold text, headings |
| #819BF7 text on black | 7.96:1 | AAA | Lc -50.7 | 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
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ABBEF9
oklch(80.8% 0.086 270.6)
-
Step 400
400 (this color)
#819BF7
oklch(70.9% 0.138 270.6)
-
Step 500
500
#637EF3
oklch(63.1% 0.177 270.8)
-
Step 600
600
#4C64E1
oklch(55.6% 0.191 270.7)
-
Step 700
700
#3E52C4
oklch(49.1% 0.178 270.8)
-
Step 800
800
#33449E
oklch(42.7% 0.147 270.8)
-
Step 900
900
#2C3A7E
oklch(37.7% 0.116 271.1)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#819BF7 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) | #78A5FB | 0.026 |
| Deuteranopia (no green cones) | #6C9BF5 | 0.025 |
| Tritanopia (no blue cones) | #52AEBD | 0.123 |
| Achromatopsia (no color) | #9F9F9F | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819BF7
#819BF7
oklch(70.9% 0.138 270.6)
- #C29D1D
#C29D1D
oklch(71% 0.138 90.8)
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 #819BF7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.019
- Cornflower Blue #6495ED ΔE 0.041
- Perrywinkle #8F8CE7 ΔE 0.042
- Lavender Blue #8B88F8 ΔE 0.049
- Chefchaouen Blue #4895EF ΔE 0.064
- Soft Blue #6488EA ΔE 0.065
- Periwinkle #8E82FE ΔE 0.066
- Carolina Blue #8AB8FE ΔE 0.077
Use #819BF7 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.