#687BCE
Closest named color: Soft Blue (#6488EA). oklch(60.5% 0.128 272.3), rgb(104, 123, 206).
Aa
Black text reads best on this color (5.31:1).
About this color
#687BCE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.128 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.049 away. Black text reads best on it, at 5.31:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.31:1 |
| White text | 3.95:1 |
Values
| HEX | #687BCE |
| RGB | rgb(104, 123, 206) |
| HSL | hsl(229, 51%, 61%) |
| OKLCH | oklch(60.5% 0.128 272.3) |
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 #687BCE | 3.95:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #687BCE | 5.31:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #687BCE text on white | 3.95:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #687BCE text on black | 5.31:1 | AA | Lc -34.9 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F6
oklch(93.5% 0.018 272.3)
-
Step 200
200
#D1D8F1
oklch(88.5% 0.035 273.2)
-
Step 300
300
#B2BFEA
oklch(80.9% 0.063 271.8)
-
Step 400
400
#8B9DDF
oklch(70.8% 0.099 272)
-
Step 500
500 (this color)
#687BCE
oklch(60.5% 0.128 272.3)
-
Step 600
600
#586BC4
oklch(55.6% 0.139 272.1)
-
Step 700
700
#4959A9
oklch(49.2% 0.128 272.4)
-
Step 800
800
#3C4989
oklch(42.8% 0.107 272.5)
-
Step 900
900
#333D6E
oklch(37.7% 0.085 273)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#687BCE 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) | #5A85D1 | 0.029 |
| Deuteranopia (no green cones) | #507CCC | 0.028 |
| Tritanopia (no blue cones) | #3E8D9A | 0.115 |
| Achromatopsia (no color) | #808080 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #687BCE
#687BCE
oklch(60.5% 0.128 272.3)
- #9C7F00
#9C7F00
oklch(60.6% 0.124 92.7)
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 #687BCE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.049
- Cool Blue #4984B8 ΔE 0.057
- Windows Blue #3778BF ΔE 0.060
- Dark Sky Blue #448EE4 ΔE 0.060
- Faded Blue #658CBB ΔE 0.061
- Steel Blue #4682B4 ΔE 0.062
- Cornflower #6A79F7 ΔE 0.063
- Off Blue #5684AE ΔE 0.065
Use #687BCE 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.