#688AD2
Closest named color: Faded Blue (#658CBB). oklch(63.9% 0.115 264.2), rgb(104, 138, 210).
Aa
Black text reads best on this color (6.15:1).
About this color
#688AD2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.115 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.038 away. Black text reads best on it, at 6.15:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.15:1 |
| White text | 3.41:1 |
Values
| HEX | #688AD2 |
| RGB | rgb(104, 138, 210) |
| HSL | hsl(221, 54%, 62%) |
| OKLCH | oklch(63.9% 0.115 264.2) |
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 #688AD2 | 3.41:1 | AA large text | Lc -67.0 | Content text, not long reading |
| Black text on #688AD2 | 6.15:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #688AD2 text on white | 3.41:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #688AD2 text on black | 6.15:1 | AA | Lc -40.2 | 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 500.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AEC1E6
oklch(80.9% 0.056 263.7)
-
Step 400
400
#84A0DA
oklch(70.7% 0.091 264.3)
-
Step 500
500 (this color)
#688AD2
oklch(63.9% 0.115 264.2)
-
Step 600
600
#4D70BC
oklch(55.5% 0.125 264.1)
-
Step 700
700
#3E5EA2
oklch(49.2% 0.116 263.7)
-
Step 800
800
#344D84
oklch(42.8% 0.097 264.3)
-
Step 900
900
#2D4069
oklch(37.6% 0.075 264.3)
-
Step 950
950
#1A263E
oklch(27% 0.048 263.3)
#688AD2 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) | #6E90D5 | 0.019 |
| Deuteranopia (no green cones) | #6286D0 | 0.014 |
| Tritanopia (no blue cones) | #3899A4 | 0.103 |
| Achromatopsia (no color) | #8B8B8B | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688AD2
#688AD2
oklch(63.9% 0.115 264.2)
- #AD852A
#AD852A
oklch(63.9% 0.115 83.8)
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 #688AD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.038
- Soft Blue #6488EA ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.041
- Cornflower Blue #6495ED ΔE 0.045
- Chefchaouen Blue #4895EF ΔE 0.052
- Cool Blue #4984B8 ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.060
- Off Blue #5684AE ΔE 0.061
Use #688AD2 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.