#818ECF
Closest named color: Perrywinkle (#8F8CE7). oklch(66.2% 0.098 274.8), rgb(129, 142, 207).
Aa
Black text reads best on this color (6.70:1).
About this color
#818ECF is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.098 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Perrywinkle (#8F8CE7), ΔE 0.043 away. Black text reads best on it, at 6.70:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Perrywinkle (#8F8CE7) |
| Black text | 6.70:1 |
| White text | 3.13:1 |
Values
| HEX | #818ECF |
| RGB | rgb(129, 142, 207) |
| HSL | hsl(230, 45%, 66%) |
| OKLCH | oklch(66.2% 0.098 274.8) |
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 #818ECF | 3.13:1 | AA large text | Lc -63.7 | Content text, not long reading |
| Black text on #818ECF | 6.70:1 | AA | Lc 45.7 | Large or bold text, headings |
| #818ECF text on white | 3.13:1 | AA large text | Lc 58.3 | Large or bold text, headings |
| #818ECF text on black | 6.70:1 | AA | Lc -43.4 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D3D8EB
oklch(88.4% 0.027 274.1)
-
Step 300
300
#B7BFE0
oklch(80.9% 0.047 274.6)
-
Step 400
400
#929DD1
oklch(70.6% 0.077 275)
-
Step 500
500 (this color)
#818ECF
oklch(66.2% 0.098 274.8)
-
Step 600
600
#616DB1
oklch(55.5% 0.106 274.8)
-
Step 700
700
#505B98
oklch(49% 0.098 274.5)
-
Step 800
800
#424B7C
oklch(42.8% 0.082 274.5)
-
Step 900
900
#383F63
oklch(37.8% 0.062 274.7)
-
Step 950
950
#20253A
oklch(27% 0.04 273.2)
#818ECF 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) | #7995D2 | 0.020 |
| Deuteranopia (no green cones) | #738FCD | 0.018 |
| Tritanopia (no blue cones) | #6A9BA5 | 0.088 |
| Achromatopsia (no color) | #919191 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818ECF
#818ECF
oklch(66.2% 0.098 274.8)
- #A69247
#A69247
oklch(66.2% 0.098 94.6)
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 #818ECF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Perrywinkle #8F8CE7 ΔE 0.043
- Faded Blue #658CBB ΔE 0.048
- Cornflower Blue #6495ED ΔE 0.053
- Soft Blue #6488EA ΔE 0.059
- Silver Lake Blue #778DA9 ΔE 0.060
- Wisteria #A87DC2 ΔE 0.068
- Cool Gray #8D99AE ΔE 0.068
- Lavender Blue #8B88F8 ΔE 0.068
Use #818ECF 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.