#687AA4
Closest named color: Off Blue (#5684AE). oklch(58.2% 0.068 266.4), rgb(104, 122, 164).
Aa
Black text reads best on this color (4.90:1).
About this color
#687AA4 is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.068 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.033 away. Black text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 4.90:1 |
| White text | 4.27:1 |
Values
| HEX | #687AA4 |
| RGB | rgb(104, 122, 164) |
| HSL | hsl(222, 25%, 53%) |
| OKLCH | oklch(58.2% 0.068 266.4) |
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 #687AA4 | 4.27:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #687AA4 | 4.90:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #687AA4 text on white | 4.27:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #687AA4 text on black | 4.90:1 | AA | Lc -32.1 | 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 600.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E5
oklch(88.5% 0.017 267.8)
-
Step 300
300
#B7C1D5
oklch(80.9% 0.03 264.4)
-
Step 400
400
#92A0C0
oklch(70.6% 0.05 266.5)
-
Step 500
500
#7889B0
oklch(63.1% 0.062 266.3)
-
Step 600
600 (this color)
#687AA4
oklch(58.2% 0.068 266.4)
-
Step 700
700
#506085
oklch(49.1% 0.063 266.1)
-
Step 800
800
#424E6C
oklch(42.6% 0.052 267.4)
-
Step 900
900
#374158
oklch(37.6% 0.042 266.2)
-
Step 950
950
#212633
oklch(27% 0.025 268.3)
#687AA4 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) | #6C7DA6 | 0.011 |
| Deuteranopia (no green cones) | #6678A3 | 0.007 |
| Tritanopia (no blue cones) | #568388 | 0.063 |
| Achromatopsia (no color) | #7A7A7A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #687AA4
#687AA4
oklch(58.2% 0.068 266.4)
- #8D784A
#8D784A
oklch(58.1% 0.069 85.8)
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 #687AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.033
- Stormy Blue #507B9C ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.035
- Grey Blue #647D8E ΔE 0.039
- Lavender Gray #7E7F9A ΔE 0.040
- Slate Gray #708090 ΔE 0.042
- Cerulean #457B9D ΔE 0.043
- Steel Blue #4682B4 ΔE 0.043
Use #687AA4 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.