#6677CF
Closest named color: Soft Blue (#6488EA). oklch(59.7% 0.135 273.4), rgb(102, 119, 207).
Aa
Black text reads best on this color (5.10:1).
About this color
#6677CF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.135 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.055 away. Black text reads best on it, at 5.10:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #6677CF |
| RGB | rgb(102, 119, 207) |
| HSL | hsl(230, 52%, 61%) |
| OKLCH | oklch(59.7% 0.135 273.4) |
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 #6677CF | 4.11:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #6677CF | 5.10:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #6677CF text on white | 4.11:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #6677CF text on black | 5.10:1 | AA | Lc -33.5 | 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
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F2
oklch(88.5% 0.037 273.7)
-
Step 300
300
#B2BEEC
oklch(80.8% 0.066 273.4)
-
Step 400
400
#8B9CE3
oklch(70.8% 0.106 273.1)
-
Step 500
500 (this color)
#6677CF
oklch(59.7% 0.135 273.4)
-
Step 600
600
#5969C8
oklch(55.6% 0.147 273.5)
-
Step 700
700
#4957AD
oklch(49.1% 0.137 273.4)
-
Step 800
800
#3C488C
oklch(42.8% 0.113 273.2)
-
Step 900
900
#333D70
oklch(37.8% 0.088 273.2)
-
Step 950
950
#1E2442
oklch(27.1% 0.056 273.5)
#6677CF 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) | #5382D2 | 0.033 |
| Deuteranopia (no green cones) | #4879CD | 0.034 |
| Tritanopia (no blue cones) | #398A99 | 0.120 |
| Achromatopsia (no color) | #7D7D7D | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6677CF
#6677CF
oklch(59.7% 0.135 273.4)
- #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 #6677CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.055
- Windows Blue #3778BF ΔE 0.057
- Cornflower #6A79F7 ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.061
- Cool Blue #4984B8 ΔE 0.063
- Dark Sky Blue #448EE4 ΔE 0.066
- Steel Blue #4682B4 ΔE 0.067
- Royal Blue #4169E1 ΔE 0.067
Use #6677CF 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.