#819CD8
Closest named color: Cornflower Blue (#6495ED). oklch(69.6% 0.094 265.4), rgb(129, 156, 216).
Aa
Black text reads best on this color (7.68:1).
About this color
#819CD8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.094 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.053 away. Black text reads best on it, at 7.68:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.68:1 |
| White text | 2.73:1 |
Values
| HEX | #819CD8 |
| RGB | rgb(129, 156, 216) |
| HSL | hsl(221, 53%, 68%) |
| OKLCH | oklch(69.6% 0.094 265.4) |
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 #819CD8 | 2.73:1 | Fails | Lc -58.1 | Large or bold text, headings |
| Black text on #819CD8 | 7.68:1 | AAA | Lc 51.2 | Large or bold text, headings |
| #819CD8 text on white | 2.73:1 | Fails | Lc 52.8 | Large or bold text, headings |
| #819CD8 text on black | 7.68:1 | AAA | Lc -49.0 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AEC1E7
oklch(80.9% 0.058 264.2)
-
Step 400
400 (this color)
#819CD8
oklch(69.6% 0.094 265.4)
-
Step 500
500
#6687D2
oklch(63.1% 0.12 265.2)
-
Step 600
600
#4E6FBF
oklch(55.6% 0.13 265.5)
-
Step 700
700
#3F5DA5
oklch(49.2% 0.121 265.2)
-
Step 800
800
#344C86
oklch(42.7% 0.101 265.4)
-
Step 900
900
#2D406B
oklch(37.7% 0.078 264.9)
-
Step 950
950
#1B263F
oklch(27.2% 0.049 265.2)
#819CD8 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) | #87A1DB | 0.016 |
| Deuteranopia (no green cones) | #7E99D7 | 0.009 |
| Tritanopia (no blue cones) | #64A8B1 | 0.083 |
| Achromatopsia (no color) | #9C9C9C | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CD8
#819CD8
oklch(69.6% 0.094 265.4)
- #B89955
#B89955
oklch(69.7% 0.095 85.4)
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 #819CD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.053
- Perrywinkle #8F8CE7 ΔE 0.055
- Periwinkle Blue #8F99FB ΔE 0.058
- Greyblue #77A1B5 ΔE 0.061
- Cool Gray #8D99AE ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.065
- Bluegrey #85A3B2 ΔE 0.066
- Faded Blue #658CBB ΔE 0.069
Use #819CD8 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.