#6684BE
Closest named color: Faded Blue (#658CBB). oklch(61.5% 0.095 262.9), rgb(102, 132, 190).
Aa
Black text reads best on this color (5.60:1).
About this color
#6684BE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.095 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.024 away. Black text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #6684BE |
| RGB | rgb(102, 132, 190) |
| HSL | hsl(220, 40%, 57%) |
| OKLCH | oklch(61.5% 0.095 262.9) |
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 #6684BE | 3.74:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #6684BE | 5.60:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #6684BE text on white | 3.74:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #6684BE text on black | 5.60:1 | AA | Lc -36.8 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEB
oklch(88.6% 0.026 261.1)
-
Step 300
300
#B1C1DF
oklch(80.9% 0.046 263)
-
Step 400
400
#88A1D0
oklch(70.7% 0.075 262.8)
-
Step 500
500 (this color)
#6684BE
oklch(61.5% 0.095 262.9)
-
Step 600
600
#5372B0
oklch(55.6% 0.103 263.2)
-
Step 700
700
#435F97
oklch(49% 0.096 263.1)
-
Step 800
800
#374E7B
oklch(42.7% 0.08 262.9)
-
Step 900
900
#304163
oklch(37.7% 0.063 263.4)
-
Step 950
950
#1C263A
oklch(26.9% 0.04 263.6)
#6684BE 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) | #6F88C0 | 0.017 |
| Deuteranopia (no green cones) | #6580BD | 0.011 |
| Tritanopia (no blue cones) | #449099 | 0.084 |
| Achromatopsia (no color) | #848484 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6684BE
#6684BE
oklch(61.5% 0.095 262.9)
- #A07F3B
#A07F3B
oklch(61.4% 0.095 83.3)
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 #6684BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.024
- Off Blue #5684AE ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.033
- Cool Blue #4984B8 ΔE 0.033
- Steel Blue #4682B4 ΔE 0.040
- Silver Lake Blue #778DA9 ΔE 0.052
- Blue Grey #758DA3 ΔE 0.058
- Lavender Gray #7E7F9A ΔE 0.059
Use #6684BE 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.