#819CD5
Closest named color: Cornflower Blue (#6495ED). oklch(69.4% 0.09 264.6), rgb(129, 156, 213).
Aa
Black text reads best on this color (7.64:1).
About this color
#819CD5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.090 and its hue 265°. 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 7.64:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.64:1 |
| White text | 2.74:1 |
Values
| HEX | #819CD5 |
| RGB | rgb(129, 156, 213) |
| HSL | hsl(221, 50%, 67%) |
| OKLCH | oklch(69.4% 0.09 264.6) |
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 #819CD5 | 2.74:1 | Fails | Lc -58.3 | Large or bold text, headings |
| Black text on #819CD5 | 7.64:1 | AAA | Lc 51.0 | Large or bold text, headings |
| #819CD5 text on white | 2.74:1 | Fails | Lc 53.0 | Large or bold text, headings |
| #819CD5 text on black | 7.64:1 | AAA | Lc -48.8 | 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
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#AFC1E6
oklch(81% 0.056 264.7)
-
Step 400
400 (this color)
#819CD5
oklch(69.4% 0.09 264.6)
-
Step 500
500
#6787CF
oklch(63% 0.115 265.1)
-
Step 600
600
#4E70BC
oklch(55.6% 0.125 264.5)
-
Step 700
700
#3F5DA2
oklch(49% 0.116 264.8)
-
Step 800
800
#344D83
oklch(42.8% 0.095 264.1)
-
Step 900
900
#2E4069
oklch(37.7% 0.074 265.1)
-
Step 950
950
#1B263E
oklch(27.1% 0.048 264.7)
#819CD5 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) | #88A0D8 | 0.015 |
| Deuteranopia (no green cones) | #8099D4 | 0.008 |
| Tritanopia (no blue cones) | #65A8B0 | 0.081 |
| Achromatopsia (no color) | #9C9C9C | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CD5
#819CD5
oklch(69.4% 0.09 264.6)
- #B79859
#B79859
oklch(69.4% 0.09 83.9)
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 #819CD5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.056
- Greyblue #77A1B5 ΔE 0.056
- Cool Gray #8D99AE ΔE 0.058
- Perrywinkle #8F8CE7 ΔE 0.058
- Bluey Grey #89A0B0 ΔE 0.060
- Bluegrey #85A3B2 ΔE 0.062
- Periwinkle Blue #8F99FB ΔE 0.063
- Faded Blue #658CBB ΔE 0.066
Use #819CD5 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.