#819CDF
Closest named color: Cornflower Blue (#6495ED). oklch(69.9% 0.104 266.9), rgb(129, 156, 223).
Aa
Black text reads best on this color (7.75:1).
About this color
#819CDF is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.104 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.046 away. Black text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.75:1 |
| White text | 2.70:1 |
Values
| HEX | #819CDF |
| RGB | rgb(129, 156, 223) |
| HSL | hsl(223, 59%, 69%) |
| OKLCH | oklch(69.9% 0.104 266.9) |
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 #819CDF | 2.70:1 | Fails | Lc -57.6 | Large or bold text, headings |
| Black text on #819CDF | 7.75:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #819CDF text on white | 2.70:1 | Fails | Lc 52.4 | Large or bold text, headings |
| #819CDF text on black | 7.75:1 | AAA | Lc -49.4 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#AEC0EB
oklch(80.9% 0.064 267.2)
-
Step 400
400 (this color)
#819CDF
oklch(69.9% 0.104 266.9)
-
Step 500
500
#6585D9
oklch(63.1% 0.132 266.9)
-
Step 600
600
#4D6DC7
oklch(55.6% 0.144 267)
-
Step 700
700
#3E5BAC
oklch(49.2% 0.134 266.7)
-
Step 800
800
#334A8B
oklch(42.6% 0.111 267)
-
Step 900
900
#2D3F6F
oklch(37.8% 0.085 266.8)
-
Step 950
950
#1A2541
oklch(27% 0.055 266.6)
#819CDF 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) | #84A2E2 | 0.017 |
| Deuteranopia (no green cones) | #7B99DD | 0.012 |
| Tritanopia (no blue cones) | #60AAB4 | 0.093 |
| Achromatopsia (no color) | #9D9D9D | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CDF
#819CDF
oklch(69.9% 0.104 266.9)
- #BA9A4D
#BA9A4D
oklch(70% 0.103 87)
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 #819CDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.046
- Perrywinkle #8F8CE7 ΔE 0.048
- Periwinkle Blue #8F99FB ΔE 0.048
- Chefchaouen Blue #4895EF ΔE 0.068
- Lavender Blue #8B88F8 ΔE 0.071
- Greyblue #77A1B5 ΔE 0.071
- Soft Blue #6488EA ΔE 0.072
- Cool Gray #8D99AE ΔE 0.072
Use #819CDF 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.