#616BE4
Closest named color: Dark Periwinkle (#665FD1). oklch(58.4% 0.181 275.7), rgb(97, 107, 228).
Aa
Black text reads best on this color (4.73:1).
About this color
#616BE4 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.181 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.039 away. Black text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #616BE4 |
| RGB | rgb(97, 107, 228) |
| HSL | hsl(235, 71%, 64%) |
| OKLCH | oklch(58.4% 0.181 275.7) |
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 #616BE4 | 4.43:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #616BE4 | 4.73:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #616BE4 text on white | 4.43:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #616BE4 text on black | 4.73:1 | AA | Lc -31.2 | 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 600.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D7F8
oklch(88.4% 0.046 276)
-
Step 300
300
#B1BDF6
oklch(80.9% 0.082 275.2)
-
Step 400
400
#8A98F1
oklch(70.6% 0.131 275.7)
-
Step 500
500
#707CEC
oklch(63.1% 0.167 275.9)
-
Step 600
600 (this color)
#616BE4
oklch(58.4% 0.181 275.7)
-
Step 700
700
#4A51BE
oklch(49.2% 0.168 275.5)
-
Step 800
800
#3D4399
oklch(42.8% 0.138 275.9)
-
Step 900
900
#33397A
oklch(37.6% 0.109 275.9)
-
Step 950
950
#1E2247
oklch(27% 0.068 276.2)
#616BE4 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) | #1F7DE8 | 0.065 |
| Deuteranopia (no green cones) | #0072E1 | 0.068 |
| Tritanopia (no blue cones) | #00879D | 0.160 |
| Achromatopsia (no color) | #787878 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616BE4
#616BE4
oklch(58.4% 0.181 275.7)
- #917A00
#917A00
oklch(58.4% 0.12 95.8)
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 #616BE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.039
- Royal Blue #4169E1 ΔE 0.039
- Medium Slate Blue #7B68EE ΔE 0.040
- Cornflower #6A79F7 ΔE 0.045
- Neon Blue #4361EE ΔE 0.049
- Light Indigo #6D5ACF ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.051
- Warm Blue #4B57DB ΔE 0.060
Use #616BE4 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.