#688FB3
Closest named color: Faded Blue (#658CBB). oklch(63.5% 0.07 247), rgb(104, 143, 179).
Aa
Black text reads best on this color (6.16:1).
About this color
#688FB3 is a medium-light, muted blue. In OKLCH its lightness is 64%, its chroma 0.070 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.017 away. Black text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.16:1 |
| White text | 3.40:1 |
Values
| HEX | #688FB3 |
| RGB | rgb(104, 143, 179) |
| HSL | hsl(209, 33%, 55%) |
| OKLCH | oklch(63.5% 0.07 247) |
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 #688FB3 | 3.40:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #688FB3 | 6.16:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #688FB3 text on white | 3.40:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #688FB3 text on black | 6.16:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE5
oklch(88.6% 0.018 245.4)
-
Step 300
300
#B0C3D6
oklch(80.9% 0.034 248.2)
-
Step 400
400
#86A4C1
oklch(70.6% 0.054 247.7)
-
Step 500
500 (this color)
#688FB3
oklch(63.5% 0.07 247)
-
Step 600
600
#4E779D
oklch(55.5% 0.075 247.5)
-
Step 700
700
#3E6487
oklch(49% 0.071 247.5)
-
Step 800
800
#34526D
oklch(42.7% 0.058 246.8)
-
Step 900
900
#2D4459
oklch(37.7% 0.046 246.9)
-
Step 950
950
#1B2834
oklch(27.1% 0.029 246.9)
#688FB3 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) | #818FB5 | 0.032 |
| Deuteranopia (no green cones) | #7788B2 | 0.025 |
| Tritanopia (no blue cones) | #4C979B | 0.058 |
| Achromatopsia (no color) | #8B8B8B | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688FB3
#688FB3
oklch(63.5% 0.07 247)
- #A8835D
#A8835D
oklch(63.6% 0.07 66.8)
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 #688FB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.017
- Silver Lake Blue #778DA9 ΔE 0.022
- Blue Grey #758DA3 ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.032
- Off Blue #5684AE ΔE 0.040
- Light Slate Gray #778899 ΔE 0.040
- Steel #738595 ΔE 0.046
- Cool Blue #4984B8 ΔE 0.050
Use #688FB3 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.