#617FC6
Closest named color: Cool Blue (#4984B8). oklch(60.5% 0.114 265.7), rgb(97, 127, 198).
Aa
Black text reads best on this color (5.35:1).
About this color
#617FC6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.114 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.038 away. Black text reads best on it, at 5.35:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.35:1 |
| White text | 3.91:1 |
Values
| HEX | #617FC6 |
| RGB | rgb(97, 127, 198) |
| HSL | hsl(222, 47%, 58%) |
| OKLCH | oklch(60.5% 0.114 265.7) |
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 #617FC6 | 3.91:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #617FC6 | 5.35:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #617FC6 text on white | 3.91:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #617FC6 text on black | 5.35:1 | AA | Lc -35.2 | 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
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#B0C1E6
oklch(81% 0.056 265.7)
-
Step 400
400
#86A0D9
oklch(70.8% 0.089 265.3)
-
Step 500
500 (this color)
#617FC6
oklch(60.5% 0.114 265.7)
-
Step 600
600
#5070BC
oklch(55.7% 0.124 265.4)
-
Step 700
700
#415DA2
oklch(49.1% 0.116 265.7)
-
Step 800
800
#364C83
oklch(42.7% 0.096 266)
-
Step 900
900
#2F4069
oklch(37.8% 0.074 265.9)
-
Step 950
950
#1B263E
oklch(27.1% 0.048 264.7)
#617FC6 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) | #6386C9 | 0.019 |
| Deuteranopia (no green cones) | #587CC4 | 0.015 |
| Tritanopia (no blue cones) | #338E99 | 0.102 |
| Achromatopsia (no color) | #818181 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617FC6
#617FC6
oklch(60.5% 0.114 265.7)
- #A07C1E
#A07C1E
oklch(60.5% 0.114 86)
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 #617FC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.038
- Steel Blue #4682B4 ΔE 0.043
- Faded Blue #658CBB ΔE 0.045
- Off Blue #5684AE ΔE 0.045
- Dusty Blue #5A86AD ΔE 0.049
- Windows Blue #3778BF ΔE 0.051
- Soft Blue #6488EA ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.057
Use #617FC6 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.