#717CB5
Closest named color: Off Blue (#5684AE). oklch(60.1% 0.088 275.1), rgb(113, 124, 181).
Aa
Black text reads best on this color (5.25:1).
About this color
#717CB5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.088 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.042 away. Black text reads best on it, at 5.25:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #717CB5 |
| RGB | rgb(113, 124, 181) |
| HSL | hsl(230, 31%, 58%) |
| OKLCH | oklch(60.1% 0.088 275.1) |
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 #717CB5 | 3.99:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #717CB5 | 5.25:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #717CB5 text on white | 3.99:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #717CB5 text on black | 5.25:1 | AA | Lc -34.4 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E9
oklch(88.4% 0.024 275.3)
-
Step 300
300
#B8BFDD
oklch(80.9% 0.043 275)
-
Step 400
400
#949ECC
oklch(70.8% 0.068 275)
-
Step 500
500 (this color)
#717CB5
oklch(60.1% 0.088 275.1)
-
Step 600
600
#636EAB
oklch(55.6% 0.096 275.1)
-
Step 700
700
#525C93
oklch(49.1% 0.089 274.8)
-
Step 800
800
#434B77
oklch(42.6% 0.074 275)
-
Step 900
900
#393F60
oklch(37.7% 0.057 275.4)
-
Step 950
950
#212538
oklch(27% 0.036 274.6)
#717CB5 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) | #6982B7 | 0.018 |
| Deuteranopia (no green cones) | #657DB4 | 0.016 |
| Tritanopia (no blue cones) | #5D8790 | 0.079 |
| Achromatopsia (no color) | #7F7F7F | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #717CB5
#717CB5
oklch(60.1% 0.088 275.1)
- #91803E
#91803E
oklch(60.1% 0.089 95.1)
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 #717CB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.042
- Dusty Blue #5A86AD ΔE 0.043
- Faded Blue #658CBB ΔE 0.044
- Cool Blue #4984B8 ΔE 0.048
- Lavender Gray #7E7F9A ΔE 0.048
- Steel Blue #4682B4 ΔE 0.050
- Silver Lake Blue #778DA9 ΔE 0.058
- Stormy Blue #507B9C ΔE 0.059
Use #717CB5 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.