#819DEB
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.7% 0.119 268.2), rgb(129, 157, 235).
Aa
Black text reads best on this color (7.95:1).
About this color
#819DEB is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.119 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.033 away. Black text reads best on it, at 7.95:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.95:1 |
| White text | 2.63:1 |
Values
| HEX | #819DEB |
| RGB | rgb(129, 157, 235) |
| HSL | hsl(224, 73%, 71%) |
| OKLCH | oklch(70.7% 0.119 268.2) |
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 #819DEB | 2.63:1 | Fails | Lc -56.5 | Large or bold text, headings |
| Black text on #819DEB | 7.95:1 | AAA | Lc 52.7 | Large or bold text, headings |
| #819DEB text on white | 2.63:1 | Fails | Lc 51.3 | Large or bold text, headings |
| #819DEB text on black | 7.95:1 | AAA | Lc -50.6 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F2
oklch(81% 0.074 267.7)
-
Step 400
400 (this color)
#819DEB
oklch(70.7% 0.119 268.2)
-
Step 500
500
#6383E5
oklch(63.2% 0.152 268.2)
-
Step 600
600
#4B6AD3
oklch(55.7% 0.165 268.3)
-
Step 700
700
#3C58B7
oklch(49.2% 0.154 268)
-
Step 800
800
#324894
oklch(42.7% 0.128 268.4)
-
Step 900
900
#2B3D76
oklch(37.7% 0.1 268.2)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#819DEB 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) | #81A4EE | 0.018 |
| Deuteranopia (no green cones) | #769BE9 | 0.015 |
| Tritanopia (no blue cones) | #5AADB9 | 0.106 |
| Achromatopsia (no color) | #9F9F9F | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819DEB
#819DEB
oklch(70.7% 0.119 268.2)
- #BF9C3D
#BF9C3D
oklch(70.7% 0.119 88.5)
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 #819DEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.033
- Cornflower Blue #6495ED ΔE 0.042
- Perrywinkle #8F8CE7 ΔE 0.045
- Lavender Blue #8B88F8 ΔE 0.061
- Chefchaouen Blue #4895EF ΔE 0.065
- Soft Blue #6488EA ΔE 0.069
- Carolina Blue #8AB8FE ΔE 0.073
- Periwinkle #8E82FE ΔE 0.079
Use #819DEB 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.