#6686DF
Closest named color: Soft Blue (#6488EA). oklch(63.7% 0.139 267.5), rgb(102, 134, 223).
Aa
Black text reads best on this color (6.04:1).
About this color
#6686DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.139 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.016 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #6686DF |
| RGB | rgb(102, 134, 223) |
| HSL | hsl(224, 65%, 64%) |
| OKLCH | oklch(63.7% 0.139 267.5) |
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 #6686DF | 3.47:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #6686DF | 6.04:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #6686DF text on white | 3.47:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #6686DF text on black | 6.04:1 | AA | Lc -39.5 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#ADC0ED
oklch(80.9% 0.067 267)
-
Step 400
400
#839EE5
oklch(70.7% 0.109 267.7)
-
Step 500
500 (this color)
#6686DF
oklch(63.7% 0.139 267.5)
-
Step 600
600
#4C6CCB
oklch(55.6% 0.151 267.4)
-
Step 700
700
#3E5AAF
oklch(49.2% 0.139 267.4)
-
Step 800
800
#334A8E
oklch(42.8% 0.116 267.3)
-
Step 900
900
#2C3E71
oklch(37.6% 0.09 267.3)
-
Step 950
950
#1A2542
oklch(27% 0.056 266.9)
#6686DF 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) | #618FE2 | 0.023 |
| Deuteranopia (no green cones) | #5384DD | 0.023 |
| Tritanopia (no blue cones) | #2399A8 | 0.123 |
| Achromatopsia (no color) | #898989 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6686DF
#6686DF
oklch(63.7% 0.139 267.5)
- #AC8500
#AC8500
oklch(63.6% 0.13 87.8)
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 #6686DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.016
- Dark Sky Blue #448EE4 ΔE 0.036
- Cornflower Blue #6495ED ΔE 0.041
- Chefchaouen Blue #4895EF ΔE 0.046
- Cornflower #6A79F7 ΔE 0.053
- Perrywinkle #8F8CE7 ΔE 0.059
- Faded Blue #658CBB ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.063
Use #6686DF 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.