#688BB4
Closest named color: Faded Blue (#658CBB). oklch(62.7% 0.074 252.9), rgb(104, 139, 180).
Aa
Black text reads best on this color (5.94:1).
About this color
#688BB4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.074 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.011 away. Black text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.94:1 |
| White text | 3.53:1 |
Values
| HEX | #688BB4 |
| RGB | rgb(104, 139, 180) |
| HSL | hsl(212, 34%, 56%) |
| OKLCH | oklch(62.7% 0.074 252.9) |
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 #688BB4 | 3.53:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #688BB4 | 5.94:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #688BB4 text on white | 3.53:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #688BB4 text on black | 5.94:1 | AA | Lc -38.8 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B1C3D8
oklch(81% 0.036 252.3)
-
Step 400
400
#87A3C4
oklch(70.6% 0.058 252.8)
-
Step 500
500 (this color)
#688BB4
oklch(62.7% 0.074 252.9)
-
Step 600
600
#5176A1
oklch(55.6% 0.079 252.9)
-
Step 700
700
#41638A
oklch(49.1% 0.074 252.7)
-
Step 800
800
#365170
oklch(42.7% 0.061 252.6)
-
Step 900
900
#2F435B
oklch(37.7% 0.049 253.5)
-
Step 950
950
#1C2735
oklch(26.9% 0.03 254.7)
#688BB4 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) | #7B8CB6 | 0.025 |
| Deuteranopia (no green cones) | #7285B3 | 0.019 |
| Tritanopia (no blue cones) | #4C9499 | 0.064 |
| Achromatopsia (no color) | #888888 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688BB4
#688BB4
oklch(62.7% 0.074 252.9)
- #A48155
#A48155
oklch(62.6% 0.074 72.2)
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 #688BB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.011
- Dusty Blue #5A86AD ΔE 0.025
- Silver Lake Blue #778DA9 ΔE 0.026
- Off Blue #5684AE ΔE 0.031
- Blue Grey #758DA3 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.042
- Light Slate Gray #778899 ΔE 0.042
- Steel #738595 ΔE 0.046
Use #688BB4 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.