#687DB7
Closest named color: Off Blue (#5684AE). oklch(59.7% 0.092 268.3), rgb(104, 125, 183).
Aa
Black text reads best on this color (5.20:1).
About this color
#687DB7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.092 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.034 away. Black text reads best on it, at 5.20:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.20:1 |
| White text | 4.03:1 |
Values
| HEX | #687DB7 |
| RGB | rgb(104, 125, 183) |
| HSL | hsl(224, 35%, 56%) |
| OKLCH | oklch(59.7% 0.092 268.3) |
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 #687DB7 | 4.03:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #687DB7 | 5.20:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #687DB7 text on white | 4.03:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #687DB7 text on black | 5.20:1 | AA | Lc -34.1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B4C0DF
oklch(80.9% 0.046 268.6)
-
Step 400
400
#8D9FCF
oklch(70.6% 0.073 268.5)
-
Step 500
500 (this color)
#687DB7
oklch(59.7% 0.092 268.3)
-
Step 600
600
#5A70AE
oklch(55.5% 0.1 268.2)
-
Step 700
700
#4A5E96
oklch(49.2% 0.093 268)
-
Step 800
800
#3D4D79
oklch(42.7% 0.076 267.9)
-
Step 900
900
#344062
oklch(37.7% 0.061 268.6)
-
Step 950
950
#1E2639
oklch(27% 0.037 266.4)
#687DB7 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) | #6982B9 | 0.014 |
| Deuteranopia (no green cones) | #617BB6 | 0.011 |
| Tritanopia (no blue cones) | #4D8992 | 0.082 |
| Achromatopsia (no color) | #7E7E7E | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #687DB7
#687DB7
oklch(59.7% 0.092 268.3)
- #967C38
#967C38
oklch(59.7% 0.093 88.4)
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 #687DB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.036
- Cool Blue #4984B8 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.039
- Faded Blue #658CBB ΔE 0.041
- Stormy Blue #507B9C ΔE 0.053
- Lavender Gray #7E7F9A ΔE 0.055
- Windows Blue #3778BF ΔE 0.057
Use #687DB7 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.