#717FCB
Closest named color: Soft Blue (#6488EA). oklch(61.8% 0.116 274.6), rgb(113, 127, 203).
Aa
Black text reads best on this color (5.60:1).
About this color
#717FCB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.116 and its hue 275°. 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 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #717FCB |
| RGB | rgb(113, 127, 203) |
| HSL | hsl(231, 46%, 62%) |
| OKLCH | oklch(61.8% 0.116 274.6) |
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 #717FCB | 3.74:1 | AA large text | Lc -70.5 | Content text, not long reading |
| Black text on #717FCB | 5.60:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #717FCB text on white | 3.74:1 | AA large text | Lc 65.0 | Content text, not long reading |
| #717FCB text on black | 5.60:1 | AA | Lc -36.7 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EF
oklch(88.5% 0.032 274.1)
-
Step 300
300
#B5BFE6
oklch(81% 0.056 273.8)
-
Step 400
400
#8F9CD9
oklch(70.6% 0.091 274.6)
-
Step 500
500 (this color)
#717FCB
oklch(61.8% 0.116 274.6)
-
Step 600
600
#5E6BBC
oklch(55.5% 0.126 274.7)
-
Step 700
700
#4E59A2
oklch(49.1% 0.117 274.8)
-
Step 800
800
#404984
oklch(42.7% 0.098 274.9)
-
Step 900
900
#363E69
oklch(37.8% 0.074 274.3)
-
Step 950
950
#1F243E
oklch(26.9% 0.049 274.4)
#717FCB 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) | #6488CE | 0.027 |
| Deuteranopia (no green cones) | #5C80C9 | 0.026 |
| Tritanopia (no blue cones) | #528F9B | 0.104 |
| Achromatopsia (no color) | #848484 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #717FCB
#717FCB
oklch(61.8% 0.116 274.6)
- #9C8420
#9C8420
oklch(61.8% 0.116 94.7)
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 #717FCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.049
- Faded Blue #658CBB ΔE 0.050
- Cool Blue #4984B8 ΔE 0.058
- Off Blue #5684AE ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.062
- Dusty Blue #5A86AD ΔE 0.062
- Steel Blue #4682B4 ΔE 0.064
- Deep Lilac #966EBD ΔE 0.066
Use #717FCB 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.