#688BB2
Closest named color: Faded Blue (#658CBB). oklch(62.6% 0.071 251.7), rgb(104, 139, 178).
Aa
Black text reads best on this color (5.92:1).
About this color
#688BB2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.071 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.013 away. Black text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #688BB2 |
| RGB | rgb(104, 139, 178) |
| HSL | hsl(212, 32%, 55%) |
| OKLCH | oklch(62.6% 0.071 251.7) |
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 #688BB2 | 3.54:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #688BB2 | 5.92:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #688BB2 text on white | 3.54:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #688BB2 text on black | 5.92:1 | AA | Lc -38.7 | 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
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B1C3D7
oklch(81% 0.035 251)
-
Step 400
400
#88A3C3
oklch(70.6% 0.056 252.9)
-
Step 500
500 (this color)
#688BB2
oklch(62.6% 0.071 251.7)
-
Step 600
600
#5176A0
oklch(55.6% 0.078 252.3)
-
Step 700
700
#416388
oklch(49% 0.072 251.4)
-
Step 800
800
#36516F
oklch(42.7% 0.06 251.8)
-
Step 900
900
#2F435A
oklch(37.6% 0.047 252.5)
-
Step 950
950
#1C2735
oklch(26.9% 0.03 254.7)
#688BB2 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) | #7C8CB4 | 0.026 |
| Deuteranopia (no green cones) | #7385B1 | 0.020 |
| Tritanopia (no blue cones) | #4D9498 | 0.062 |
| Achromatopsia (no color) | #888888 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688BB2
#688BB2
oklch(62.6% 0.071 251.7)
- #A38157
#A38157
oklch(62.6% 0.071 71.8)
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 #688BB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.013
- Dusty Blue #5A86AD ΔE 0.024
- Silver Lake Blue #778DA9 ΔE 0.024
- Blue Grey #758DA3 ΔE 0.029
- Off Blue #5684AE ΔE 0.031
- Light Slate Gray #778899 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.043
- Steel #738595 ΔE 0.043
Use #688BB2 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.