#6677D2
Closest named color: Soft Blue (#6488EA). oklch(59.8% 0.139 273.5), rgb(102, 119, 210).
Aa
Black text reads best on this color (5.13:1).
About this color
#6677D2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.139 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.052 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.13:1 |
| White text | 4.09:1 |
Values
| HEX | #6677D2 |
| RGB | rgb(102, 119, 210) |
| HSL | hsl(231, 55%, 61%) |
| OKLCH | oklch(59.8% 0.139 273.5) |
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 #6677D2 | 4.09:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #6677D2 | 5.13:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #6677D2 text on white | 4.09:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #6677D2 text on black | 5.13:1 | AA | Lc -33.8 | 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
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B2BEED
oklch(80.8% 0.068 273.6)
-
Step 400
400
#8B9BE5
oklch(70.6% 0.11 273.9)
-
Step 500
500 (this color)
#6677D2
oklch(59.8% 0.139 273.5)
-
Step 600
600
#5969CB
oklch(55.7% 0.151 273.5)
-
Step 700
700
#4956AF
oklch(49% 0.141 273.8)
-
Step 800
800
#3C478E
oklch(42.7% 0.117 273.8)
-
Step 900
900
#333C71
oklch(37.6% 0.091 274)
-
Step 950
950
#1E2442
oklch(27.1% 0.056 273.5)
#6677D2 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) | #5182D5 | 0.034 |
| Deuteranopia (no green cones) | #4679D0 | 0.036 |
| Tritanopia (no blue cones) | #368B9A | 0.125 |
| Achromatopsia (no color) | #7D7D7D | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6677D2
#6677D2
oklch(59.8% 0.139 273.5)
- #987D00
#987D00
oklch(59.8% 0.122 93.7)
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 #6677D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.052
- Cornflower #6A79F7 ΔE 0.056
- Windows Blue #3778BF ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.060
- Medium Slate Blue #7B68EE ΔE 0.065
- Dark Sky Blue #448EE4 ΔE 0.065
- Royal Blue #4169E1 ΔE 0.065
- Cool Blue #4984B8 ΔE 0.067
Use #6677D2 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.