#818ECB
Closest named color: Faded Blue (#658CBB). oklch(66% 0.092 274.4), rgb(129, 142, 203).
Aa
Black text reads best on this color (6.66:1).
About this color
#818ECB is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.092 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.045 away. Black text reads best on it, at 6.66:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.66:1 |
| White text | 3.15:1 |
Values
| HEX | #818ECB |
| RGB | rgb(129, 142, 203) |
| HSL | hsl(229, 42%, 65%) |
| OKLCH | oklch(66% 0.092 274.4) |
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 #818ECB | 3.15:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #818ECB | 6.66:1 | AA | Lc 45.5 | Large or bold text, headings |
| #818ECB text on white | 3.15:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #818ECB text on black | 6.66:1 | AA | Lc -43.2 | 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
#D4D8EA
oklch(88.5% 0.025 275.9)
-
Step 300
300
#B7BFDE
oklch(80.8% 0.045 273.9)
-
Step 400
400
#939ECE
oklch(70.8% 0.071 274.4)
-
Step 500
500 (this color)
#818ECB
oklch(66% 0.092 274.4)
-
Step 600
600
#626EAE
oklch(55.6% 0.1 274.6)
-
Step 700
700
#515C95
oklch(49.2% 0.092 274.2)
-
Step 800
800
#424B79
oklch(42.7% 0.077 274.3)
-
Step 900
900
#383F62
oklch(37.8% 0.061 274.5)
-
Step 950
950
#212539
oklch(27% 0.038 274.9)
#818ECB 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) | #7A94CE | 0.017 |
| Deuteranopia (no green cones) | #758ECA | 0.016 |
| Tritanopia (no blue cones) | #6B9AA4 | 0.082 |
| Achromatopsia (no color) | #919191 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818ECB
#818ECB
oklch(66% 0.092 274.4)
- #A4924C
#A4924C
oklch(66.1% 0.093 95.2)
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 #818ECB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.045
- Perrywinkle #8F8CE7 ΔE 0.049
- Silver Lake Blue #778DA9 ΔE 0.054
- Cornflower Blue #6495ED ΔE 0.057
- Cool Gray #8D99AE ΔE 0.063
- Soft Blue #6488EA ΔE 0.064
- Blue Grey #758DA3 ΔE 0.064
- Heather #A484AC ΔE 0.065
Use #818ECB 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.