#616FDC
Closest named color: Dark Periwinkle (#665FD1). oklch(58.6% 0.165 274.6), rgb(97, 111, 220).
Aa
Black text reads best on this color (4.81:1).
About this color
#616FDC is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.165 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.040 away. Black text reads best on it, at 4.81:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #616FDC |
| RGB | rgb(97, 111, 220) |
| HSL | hsl(233, 64%, 62%) |
| OKLCH | oklch(58.6% 0.165 274.6) |
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 #616FDC | 4.36:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #616FDC | 4.81:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #616FDC text on white | 4.36:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #616FDC text on black | 4.81:1 | AA | Lc -31.7 | 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 600.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B2BEF1
oklch(81% 0.073 274.3)
-
Step 400
400
#8B9AEA
oklch(70.7% 0.118 274.9)
-
Step 500
500
#6F7FE4
oklch(63.1% 0.152 274.4)
-
Step 600
600 (this color)
#616FDC
oklch(58.6% 0.165 274.6)
-
Step 700
700
#4954B6
oklch(49.1% 0.154 274.4)
-
Step 800
800
#3C4593
oklch(42.6% 0.127 274.7)
-
Step 900
900
#333B75
oklch(37.7% 0.099 274.8)
-
Step 950
950
#1E2345
oklch(27.1% 0.063 275.1)
#616FDC 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) | #387EE0 | 0.051 |
| Deuteranopia (no green cones) | #2474DA | 0.056 |
| Tritanopia (no blue cones) | #19879B | 0.145 |
| Achromatopsia (no color) | #797979 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616FDC
#616FDC
oklch(58.6% 0.165 274.6)
- #937A00
#937A00
oklch(58.6% 0.12 94.6)
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 #616FDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.040
- Royal Blue #4169E1 ΔE 0.043
- Cornflower #6A79F7 ΔE 0.048
- Medium Slate Blue #7B68EE ΔE 0.048
- Light Indigo #6D5ACF ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.053
- Neon Blue #4361EE ΔE 0.060
- Iris #6258C4 ΔE 0.064
Use #616FDC 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.