#687ABE
Closest named color: Cool Blue (#4984B8). oklch(59.5% 0.106 271.6), rgb(104, 122, 190).
Aa
Black text reads best on this color (5.11:1).
About this color
#687ABE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.106 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.044 away. Black text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #687ABE |
| RGB | rgb(104, 122, 190) |
| HSL | hsl(227, 40%, 58%) |
| OKLCH | oklch(59.5% 0.106 271.6) |
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 #687ABE | 4.10:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #687ABE | 5.11:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #687ABE text on white | 4.10:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #687ABE text on black | 5.11:1 | AA | Lc -33.6 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D2D9ED
oklch(88.6% 0.029 270.4)
-
Step 300
300
#B4BFE3
oklch(80.8% 0.052 271.8)
-
Step 400
400
#8E9ED5
oklch(70.7% 0.083 271.6)
-
Step 500
500 (this color)
#687ABE
oklch(59.5% 0.106 271.6)
-
Step 600
600
#5B6EB7
oklch(55.7% 0.116 271.2)
-
Step 700
700
#4B5B9D
oklch(49% 0.107 271.7)
-
Step 800
800
#3E4B80
oklch(42.8% 0.089 271.8)
-
Step 900
900
#343F66
oklch(37.7% 0.069 270.9)
-
Step 950
950
#1F253C
oklch(27% 0.044 272.1)
#687ABE 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) | #6181C1 | 0.019 |
| Deuteranopia (no green cones) | #597ABC | 0.019 |
| Tritanopia (no blue cones) | #498893 | 0.095 |
| Achromatopsia (no color) | #7D7D7D | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #687ABE
#687ABE
oklch(59.5% 0.106 271.6)
- #967C26
#967C26
oklch(59.5% 0.107 91.5)
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 #687ABE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.044
- Off Blue #5684AE ΔE 0.047
- Steel Blue #4682B4 ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.050
- Faded Blue #658CBB ΔE 0.052
- Windows Blue #3778BF ΔE 0.053
- Stormy Blue #507B9C ΔE 0.064
- Flat Blue #3C73A8 ΔE 0.066
Use #687ABE 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.