#6677BA
Closest named color: Cool Blue (#4984B8). oklch(58.5% 0.105 272), rgb(102, 119, 186).
Aa
Black text reads best on this color (4.91:1).
About this color
#6677BA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.105 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.046 away. Black text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #6677BA |
| RGB | rgb(102, 119, 186) |
| HSL | hsl(228, 38%, 56%) |
| OKLCH | oklch(58.5% 0.105 272) |
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 #6677BA | 4.27:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #6677BA | 4.91:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #6677BA text on white | 4.27:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #6677BA text on black | 4.91:1 | AA | Lc -32.2 | 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 600.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F3
oklch(93.5% 0.014 272.7)
-
Step 200
200
#D3D9EB
oklch(88.6% 0.026 271.1)
-
Step 300
300
#B6BFE0
oklch(80.8% 0.048 273.3)
-
Step 400
400
#909ED0
oklch(70.7% 0.075 272.3)
-
Step 500
500
#7586C4
oklch(63.2% 0.096 271.7)
-
Step 600
600 (this color)
#6677BA
oklch(58.5% 0.105 272)
-
Step 700
700
#4E5C98
oklch(49.1% 0.098 272.4)
-
Step 800
800
#404B7B
oklch(42.6% 0.081 272.8)
-
Step 900
900
#363F63
oklch(37.7% 0.063 272.4)
-
Step 950
950
#20253A
oklch(27% 0.04 273.2)
#6677BA 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) | #5F7EBD | 0.020 |
| Deuteranopia (no green cones) | #5777B8 | 0.019 |
| Tritanopia (no blue cones) | #488590 | 0.094 |
| Achromatopsia (no color) | #7A7A7A | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6677BA
#6677BA
oklch(58.5% 0.105 272)
- #927925
#927925
oklch(58.4% 0.105 91.8)
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 #6677BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.047
- Off Blue #5684AE ΔE 0.048
- Windows Blue #3778BF ΔE 0.050
- Dusty Blue #5A86AD ΔE 0.053
- Faded Blue #658CBB ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.059
- Stormy Blue #507B9C ΔE 0.059
Use #6677BA 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.