#656ADF
Closest named color: Dark Periwinkle (#665FD1). oklch(58.1% 0.175 277.6), rgb(101, 106, 223).
Aa
Black text reads best on this color (4.68:1).
About this color
#656ADF is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.175 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.032 away. Black text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #656ADF |
| RGB | rgb(101, 106, 223) |
| HSL | hsl(238, 66%, 64%) |
| OKLCH | oklch(58.1% 0.175 277.6) |
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 #656ADF | 4.48:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #656ADF | 4.68:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #656ADF text on white | 4.48:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #656ADF text on black | 4.68:1 | AA | Lc -30.8 | 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
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F7
oklch(88.5% 0.044 278.4)
-
Step 300
300
#B4BCF4
oklch(80.9% 0.08 278.1)
-
Step 400
400
#8E98EE
oklch(70.7% 0.126 277.6)
-
Step 500
500
#747CE8
oklch(63.1% 0.16 277.6)
-
Step 600
600 (this color)
#656ADF
oklch(58.1% 0.175 277.6)
-
Step 700
700
#4E51BA
oklch(49.2% 0.162 277.4)
-
Step 800
800
#404396
oklch(42.8% 0.133 277.6)
-
Step 900
900
#363978
oklch(37.7% 0.105 278)
-
Step 950
950
#1F2246
oklch(27% 0.066 277.4)
#656ADF 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) | #277CE3 | 0.067 |
| Deuteranopia (no green cones) | #0C72DD | 0.072 |
| Tritanopia (no blue cones) | #27859A | 0.154 |
| Achromatopsia (no color) | #777777 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #656ADF
#656ADF
oklch(58.1% 0.175 277.6)
- #8E7A00
#8E7A00
oklch(58.1% 0.12 97.7)
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 #656ADF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.032
- Medium Slate Blue #7B68EE ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.043
- Royal Blue #4169E1 ΔE 0.043
- Slate Blue #6A5ACD ΔE 0.045
- Cornflower #6A79F7 ΔE 0.050
- Neon Blue #4361EE ΔE 0.055
- Iris #6258C4 ΔE 0.058
Use #656ADF 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.