#617CC7
Closest named color: Cool Blue (#4984B8). oklch(59.9% 0.119 267.8), rgb(97, 124, 199).
Aa
Black text reads best on this color (5.21:1).
About this color
#617CC7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.119 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.043 away. Black text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.21:1 |
| White text | 4.02:1 |
Values
| HEX | #617CC7 |
| RGB | rgb(97, 124, 199) |
| HSL | hsl(224, 48%, 58%) |
| OKLCH | oklch(59.9% 0.119 267.8) |
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 #617CC7 | 4.02:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #617CC7 | 5.21:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #617CC7 text on white | 4.02:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #617CC7 text on black | 5.21:1 | AA | Lc -34.3 | 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
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B0C0E7
oklch(80.9% 0.058 267.6)
-
Step 400
400
#879FDB
oklch(70.7% 0.092 267.3)
-
Step 500
500 (this color)
#617CC7
oklch(59.9% 0.119 267.8)
-
Step 600
600
#526EBF
oklch(55.6% 0.13 267.7)
-
Step 700
700
#435CA5
oklch(49.2% 0.121 267.6)
-
Step 800
800
#374B85
oklch(42.6% 0.1 267.7)
-
Step 900
900
#303F6B
oklch(37.7% 0.078 268.3)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#617CC7 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) | #5F83CA | 0.019 |
| Deuteranopia (no green cones) | #537AC5 | 0.018 |
| Tritanopia (no blue cones) | #338C98 | 0.106 |
| Achromatopsia (no color) | #7F7F7F | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617CC7
#617CC7
oklch(59.9% 0.119 267.8)
- #9E7B0E
#9E7B0E
oklch(60% 0.119 87.9)
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 #617CC7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.043
- Steel Blue #4682B4 ΔE 0.047
- Windows Blue #3778BF ΔE 0.048
- Off Blue #5684AE ΔE 0.051
- Faded Blue #658CBB ΔE 0.053
- Dusty Blue #5A86AD ΔE 0.055
- Soft Blue #6488EA ΔE 0.057
- Water Blue #0E87CC ΔE 0.060
Use #617CC7 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.