#687FB3
Closest named color: Off Blue (#5684AE). oklch(60% 0.084 265.6), rgb(104, 127, 179).
Aa
Black text reads best on this color (5.27:1).
About this color
#687FB3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.084 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.027 away. Black text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.27:1 |
| White text | 3.98:1 |
Values
| HEX | #687FB3 |
| RGB | rgb(104, 127, 179) |
| HSL | hsl(222, 33%, 55%) |
| OKLCH | oklch(60% 0.084 265.6) |
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 #687FB3 | 3.98:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #687FB3 | 5.27:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #687FB3 text on white | 3.98:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #687FB3 text on black | 5.27:1 | AA | Lc -34.6 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E9
oklch(88.5% 0.023 266.9)
-
Step 300
300
#B4C1DC
oklch(81% 0.041 265)
-
Step 400
400
#8DA0CB
oklch(70.7% 0.067 266.1)
-
Step 500
500 (this color)
#687FB3
oklch(60% 0.084 265.6)
-
Step 600
600
#5A72A9
oklch(55.7% 0.091 265.6)
-
Step 700
700
#495F91
oklch(49% 0.085 265.3)
-
Step 800
800
#3C4E76
oklch(42.7% 0.071 265.1)
-
Step 900
900
#34415F
oklch(37.8% 0.054 265.9)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#687FB3 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) | #6D83B5 | 0.014 |
| Deuteranopia (no green cones) | #657CB2 | 0.010 |
| Tritanopia (no blue cones) | #4E8A91 | 0.076 |
| Achromatopsia (no color) | #7F7F7F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #687FB3
#687FB3
oklch(60% 0.084 265.6)
- #977C41
#977C41
oklch(59.9% 0.085 85.2)
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 #687FB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.028
- Cool Blue #4984B8 ΔE 0.034
- Faded Blue #658CBB ΔE 0.035
- Steel Blue #4682B4 ΔE 0.037
- Lavender Gray #7E7F9A ΔE 0.047
- Stormy Blue #507B9C ΔE 0.048
- Silver Lake Blue #778DA9 ΔE 0.052
Use #687FB3 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.