#688DD5
Closest named color: Soft Blue (#6488EA). oklch(64.7% 0.116 262.8), rgb(104, 141, 213).
Aa
Black text reads best on this color (6.35:1).
About this color
#688DD5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.116 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.037 away. Black text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.35:1 |
| White text | 3.30:1 |
Values
| HEX | #688DD5 |
| RGB | rgb(104, 141, 213) |
| HSL | hsl(220, 56%, 62%) |
| OKLCH | oklch(64.7% 0.116 262.8) |
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 #688DD5 | 3.30:1 | AA large text | Lc -65.7 | Content text, not long reading |
| Black text on #688DD5 | 6.35:1 | AA | Lc 43.8 | Non-text elements, placeholder text |
| #688DD5 text on white | 3.30:1 | AA large text | Lc 60.3 | Content text, not long reading |
| #688DD5 text on black | 6.35:1 | AA | Lc -41.4 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEF
oklch(88.6% 0.032 261.7)
-
Step 300
300
#ADC1E6
oklch(80.8% 0.057 262.7)
-
Step 400
400
#82A1DA
oklch(70.8% 0.091 262.2)
-
Step 500
500 (this color)
#688DD5
oklch(64.7% 0.116 262.8)
-
Step 600
600
#4B71BD
oklch(55.7% 0.126 262.9)
-
Step 700
700
#3C5EA3
oklch(49.1% 0.118 263)
-
Step 800
800
#324D84
oklch(42.7% 0.097 263.2)
-
Step 900
900
#2C416A
oklch(37.9% 0.075 262.7)
-
Step 950
950
#1A263E
oklch(27% 0.048 263.3)
#688DD5 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) | #7193D8 | 0.021 |
| Deuteranopia (no green cones) | #6489D3 | 0.012 |
| Tritanopia (no blue cones) | #349DA7 | 0.105 |
| Achromatopsia (no color) | #8D8D8D | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688DD5
#688DD5
oklch(64.7% 0.116 262.8)
- #B1872C
#B1872C
oklch(64.8% 0.117 82.8)
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 #688DD5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.037
- Cornflower Blue #6495ED ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.039
- Faded Blue #658CBB ΔE 0.040
- Chefchaouen Blue #4895EF ΔE 0.046
- Perrywinkle #8F8CE7 ΔE 0.059
- Cool Blue #4984B8 ΔE 0.061
- Dusty Blue #5A86AD ΔE 0.064
Use #688DD5 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.