#819BEE
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.4% 0.125 269.8), rgb(129, 155, 238).
Aa
Black text reads best on this color (7.85:1).
About this color
#819BEE is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.125 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.028 away. Black text reads best on it, at 7.85:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.85:1 |
| White text | 2.67:1 |
Values
| HEX | #819BEE |
| RGB | rgb(129, 155, 238) |
| HSL | hsl(226, 76%, 72%) |
| OKLCH | oklch(70.4% 0.125 269.8) |
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 #819BEE | 2.67:1 | Fails | Lc -57.0 | Large or bold text, headings |
| Black text on #819BEE | 7.85:1 | AAA | Lc 52.2 | Large or bold text, headings |
| #819BEE text on white | 2.67:1 | Fails | Lc 51.8 | Large or bold text, headings |
| #819BEE text on black | 7.85:1 | AAA | Lc -50.0 | 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
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ACBFF4
oklch(80.9% 0.078 269.3)
-
Step 400
400 (this color)
#819BEE
oklch(70.4% 0.125 269.8)
-
Step 500
500
#6481EA
oklch(63.2% 0.161 269.7)
-
Step 600
600
#4D68D8
oklch(55.7% 0.174 269.8)
-
Step 700
700
#3E55BB
oklch(49% 0.162 269.9)
-
Step 800
800
#334697
oklch(42.6% 0.134 269.9)
-
Step 900
900
#2C3C78
oklch(37.6% 0.104 269.6)
-
Step 950
950
#1A2447
oklch(27.1% 0.066 269.6)
#819BEE 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) | #7CA3F1 | 0.021 |
| Deuteranopia (no green cones) | #729AEC | 0.019 |
| Tritanopia (no blue cones) | #58ACB9 | 0.112 |
| Achromatopsia (no color) | #9E9E9E | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819BEE
#819BEE
oklch(70.4% 0.125 269.8)
- #BE9B33
#BE9B33
oklch(70.3% 0.125 89.6)
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 #819BEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.028
- Cornflower Blue #6495ED ΔE 0.039
- Perrywinkle #8F8CE7 ΔE 0.040
- Lavender Blue #8B88F8 ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.063
- Soft Blue #6488EA ΔE 0.065
- Periwinkle #8E82FE ΔE 0.072
- Carolina Blue #8AB8FE ΔE 0.078
Use #819BEE 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.