#616DBF
Closest named color: Dark Periwinkle (#665FD1). oklch(56.3% 0.127 275.3), rgb(97, 109, 191).
Aa
White text reads best on this color (4.72:1).
About this color
#616DBF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.127 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.048 away. White text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #616DBF |
| RGB | rgb(97, 109, 191) |
| HSL | hsl(232, 42%, 56%) |
| OKLCH | oklch(56.3% 0.127 275.3) |
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 #616DBF | 4.72:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #616DBF | 4.44:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #616DBF text on white | 4.72:1 | AA | Lc 72.6 | Content text, not long reading |
| #616DBF text on black | 4.44:1 | AA large text | Lc -29.0 | Dividers and decoration only |
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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D3D8EF
oklch(88.5% 0.032 276)
-
Step 300
300
#B6BEE6
oklch(80.9% 0.057 276.2)
-
Step 400
400
#909CDA
oklch(70.7% 0.092 275.4)
-
Step 500
500
#7683D0
oklch(63.2% 0.117 275.3)
-
Step 600
600 (this color)
#616DBF
oklch(56.3% 0.127 275.3)
-
Step 700
700
#4F59A3
oklch(49.2% 0.118 275.4)
-
Step 800
800
#404984
oklch(42.7% 0.098 274.9)
-
Step 900
900
#363D6A
oklch(37.6% 0.077 275.4)
-
Step 950
950
#20243E
oklch(27% 0.049 276)
#616DBF 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) | #4C77C2 | 0.033 |
| Deuteranopia (no green cones) | #4370BD | 0.036 |
| Tritanopia (no blue cones) | #3C7E8D | 0.111 |
| Achromatopsia (no color) | #737373 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616DBF
#616DBF
oklch(56.3% 0.127 275.3)
- #8B7400
#8B7400
oklch(56.4% 0.116 95.1)
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 #616DBF, closest first.
No curated palette has a color within ΔE 0.04 of #616DBF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.048
- French Blue #436BAD ΔE 0.048
- Windows Blue #3778BF ΔE 0.050
- Iris #6258C4 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.057
- Flat Blue #3C73A8 ΔE 0.060
- Mid Blue #276AB3 ΔE 0.066
Use #616DBF 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.