#819FDA
Closest named color: Cornflower Blue (#6495ED). oklch(70.3% 0.093 263.4), rgb(129, 159, 218).
Aa
Black text reads best on this color (7.90:1).
About this color
#819FDA is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.093 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.056 away. Black text reads best on it, at 7.90:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.90:1 |
| White text | 2.65:1 |
Values
| HEX | #819FDA |
| RGB | rgb(129, 159, 218) |
| HSL | hsl(220, 55%, 68%) |
| OKLCH | oklch(70.3% 0.093 263.4) |
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 #819FDA | 2.65:1 | Fails | Lc -56.8 | Large or bold text, headings |
| Black text on #819FDA | 7.90:1 | AAA | Lc 52.4 | Large or bold text, headings |
| #819FDA text on white | 2.65:1 | Fails | Lc 51.6 | Large or bold text, headings |
| #819FDA text on black | 7.90:1 | AAA | Lc -50.3 | 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
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CEDAEF
oklch(88.6% 0.032 261.7)
-
Step 300
300
#ADC1E7
oklch(80.9% 0.058 263.2)
-
Step 400
400 (this color)
#819FDA
oklch(70.3% 0.093 263.4)
-
Step 500
500
#6388D2
oklch(63.2% 0.12 263.2)
-
Step 600
600
#4A70BF
oklch(55.6% 0.13 263.4)
-
Step 700
700
#3C5EA5
oklch(49.2% 0.121 263.4)
-
Step 800
800
#314D85
oklch(42.7% 0.099 262.8)
-
Step 900
900
#2B406B
oklch(37.6% 0.079 263.4)
-
Step 950
950
#1A263F
oklch(27.1% 0.05 263.9)
#819FDA 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) | #8AA3DD | 0.017 |
| Deuteranopia (no green cones) | #819BD9 | 0.011 |
| Tritanopia (no blue cones) | #63ABB4 | 0.082 |
| Achromatopsia (no color) | #9F9F9F | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819FDA
#819FDA
oklch(70.3% 0.093 263.4)
- #BB9A58
#BB9A58
oklch(70.2% 0.093 83.5)
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 #819FDA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.056
- Periwinkle Blue #8F99FB ΔE 0.058
- Perrywinkle #8F8CE7 ΔE 0.060
- Greyblue #77A1B5 ΔE 0.060
- Cool Gray #8D99AE ΔE 0.064
- Bluey Grey #89A0B0 ΔE 0.064
- Bluegrey #85A3B2 ΔE 0.064
- Cool Steel #97A7B3 ΔE 0.073
Use #819FDA 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.