#819BFA
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.1% 0.142 270.9), rgb(129, 155, 250).
Aa
Black text reads best on this color (8.00:1).
About this color
#819BFA is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.142 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 8.00:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.00:1 |
| White text | 2.62:1 |
Values
| HEX | #819BFA |
| RGB | rgb(129, 155, 250) |
| HSL | hsl(227, 92%, 74%) |
| OKLCH | oklch(71.1% 0.142 270.9) |
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 #819BFA | 2.62:1 | Fails | Lc -56.2 | Large or bold text, headings |
| Black text on #819BFA | 8.00:1 | AAA | Lc 53.0 | Large or bold text, headings |
| #819BFA text on white | 2.62:1 | Fails | Lc 51.0 | Large or bold text, headings |
| #819BFA text on black | 8.00:1 | AAA | Lc -50.9 | 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)
#819BFA
oklch(71.1% 0.142 270.9)
-
Step 500
500
#627DF6
oklch(63.1% 0.182 270.9)
-
Step 600
600
#4C63E4
oklch(55.6% 0.196 270.9)
-
Step 700
700
#3D51C7
oklch(49.1% 0.184 270.7)
-
Step 800
800
#3243A1
oklch(42.7% 0.153 270.7)
-
Step 900
900
#2B3A7F
oklch(37.7% 0.118 270.6)
-
Step 950
950
#19224B
oklch(26.9% 0.077 271.1)
#819BFA 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) | #76A5FE | 0.027 |
| Deuteranopia (no green cones) | #6A9BF8 | 0.027 |
| Tritanopia (no blue cones) | #50AFBF | 0.126 |
| Achromatopsia (no color) | #A0A0A0 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819BFA
#819BFA
oklch(71.1% 0.142 270.9)
- #C39D11
#C39D11
oklch(71.1% 0.142 90.9)
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 #819BFA, 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 0.043
- Perrywinkle #8F8CE7 ΔE 0.044
- Lavender Blue #8B88F8 ΔE 0.048
- Periwinkle #8E82FE ΔE 0.064
- Chefchaouen Blue #4895EF ΔE 0.065
- Soft Blue #6488EA ΔE 0.066
- Carolina Blue #8AB8FE ΔE 0.078
Use #819BFA 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.