#687DBE
Closest named color: Cool Blue (#4984B8). oklch(60.1% 0.103 269.5), rgb(104, 125, 190).
Aa
Black text reads best on this color (5.26:1).
About this color
#687DBE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.103 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.040 away. Black text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.26:1 |
| White text | 3.98:1 |
Values
| HEX | #687DBE |
| RGB | rgb(104, 125, 190) |
| HSL | hsl(225, 40%, 58%) |
| OKLCH | oklch(60.1% 0.103 269.5) |
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 #687DBE | 3.98:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #687DBE | 5.26:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #687DBE text on white | 3.98:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #687DBE text on black | 5.26:1 | AA | Lc -34.5 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B3C0E2
oklch(80.9% 0.05 268.8)
-
Step 400
400
#8C9FD3
oklch(70.7% 0.079 268.8)
-
Step 500
500 (this color)
#687DBE
oklch(60.1% 0.103 269.5)
-
Step 600
600
#596FB5
oklch(55.6% 0.112 269.3)
-
Step 700
700
#495C9B
oklch(48.9% 0.104 269.6)
-
Step 800
800
#3C4C7E
oklch(42.7% 0.086 269.1)
-
Step 900
900
#333F65
oklch(37.6% 0.067 269.7)
-
Step 950
950
#1E253B
oklch(26.9% 0.042 269.9)
#687DBE 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) | #6583C1 | 0.016 |
| Deuteranopia (no green cones) | #5D7CBD | 0.014 |
| Tritanopia (no blue cones) | #498A95 | 0.090 |
| Achromatopsia (no color) | #7F7F7F | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #687DBE
#687DBE
oklch(60.1% 0.103 269.5)
- #997D2E
#997D2E
oklch(60.1% 0.102 89.2)
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 #687DBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.040
- Off Blue #5684AE ΔE 0.041
- Faded Blue #658CBB ΔE 0.043
- Steel Blue #4682B4 ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.044
- Windows Blue #3778BF ΔE 0.056
- Stormy Blue #507B9C ΔE 0.062
- Lavender Gray #7E7F9A ΔE 0.064
Use #687DBE 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.