#819CD2
Closest named color: Greyblue (#77A1B5). oklch(69.3% 0.086 263.8), rgb(129, 156, 210).
Aa
Black text reads best on this color (7.61:1).
About this color
#819CD2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.086 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.052 away. Black text reads best on it, at 7.61:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.61:1 |
| White text | 2.75:1 |
Values
| HEX | #819CD2 |
| RGB | rgb(129, 156, 210) |
| HSL | hsl(220, 47%, 66%) |
| OKLCH | oklch(69.3% 0.086 263.8) |
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 #819CD2 | 2.75:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #819CD2 | 7.61:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #819CD2 text on white | 2.75:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #819CD2 text on black | 7.61:1 | AAA | Lc -48.7 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9ED
oklch(88.4% 0.03 264.4)
-
Step 300
300
#AFC1E4
oklch(80.9% 0.053 263.7)
-
Step 400
400 (this color)
#819CD2
oklch(69.3% 0.086 263.8)
-
Step 500
500
#6788CC
oklch(63.1% 0.11 263.8)
-
Step 600
600
#4F71B9
oklch(55.7% 0.119 263.9)
-
Step 700
700
#405E9F
oklch(49.1% 0.11 264.1)
-
Step 800
800
#354D81
oklch(42.7% 0.092 264.2)
-
Step 900
900
#2E4167
oklch(37.8% 0.07 263.2)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#819CD2 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) | #89A0D4 | 0.016 |
| Deuteranopia (no green cones) | #8198D1 | 0.011 |
| Tritanopia (no blue cones) | #67A7AF | 0.076 |
| Achromatopsia (no color) | #9C9C9C | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CD2
#819CD2
oklch(69.3% 0.086 263.8)
- #B6985C
#B6985C
oklch(69.4% 0.086 83.7)
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 #819CD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.052
- Cool Gray #8D99AE ΔE 0.053
- Bluey Grey #89A0B0 ΔE 0.056
- Bluegrey #85A3B2 ΔE 0.057
- Cornflower Blue #6495ED ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.061
- Faded Blue #658CBB ΔE 0.065
- Periwinkle Blue #8F99FB ΔE 0.067
Use #819CD2 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.