#656AD9
Closest named color: Dark Periwinkle (#665FD1). oklch(57.7% 0.167 277.9), rgb(101, 106, 217).
Aa
Black text reads best on this color (4.61:1).
About this color
#656AD9 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.167 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.028 away. Black text reads best on it, at 4.61:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.61:1 |
| White text | 4.54:1 |
Values
| HEX | #656AD9 |
| RGB | rgb(101, 106, 217) |
| HSL | hsl(237, 60%, 62%) |
| OKLCH | oklch(57.7% 0.167 277.9) |
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 #656AD9 | 4.54:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #656AD9 | 4.61:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #656AD9 text on white | 4.54:1 | AA | Lc 71.3 | Content text, not long reading |
| #656AD9 text on black | 4.61:1 | AA | Lc -30.3 | 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 600.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F5
oklch(88.5% 0.042 278)
-
Step 300
300
#B5BDF1
oklch(81% 0.074 277.8)
-
Step 400
400
#8F98EA
oklch(70.6% 0.12 278.1)
-
Step 500
500
#757DE4
oklch(63.1% 0.153 277.7)
-
Step 600
600 (this color)
#656AD9
oklch(57.7% 0.167 277.9)
-
Step 700
700
#4F52B6
oklch(49.1% 0.155 277.8)
-
Step 800
800
#414493
oklch(42.8% 0.127 277.9)
-
Step 900
900
#363A75
oklch(37.7% 0.099 277.6)
-
Step 950
950
#202245
oklch(27% 0.064 278.7)
#656AD9 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) | #307BDD | 0.062 |
| Deuteranopia (no green cones) | #1F71D7 | 0.066 |
| Tritanopia (no blue cones) | #2F8397 | 0.146 |
| Achromatopsia (no color) | #767676 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #656AD9
#656AD9
oklch(57.7% 0.167 277.9)
- #8D7900
#8D7900
oklch(57.7% 0.119 97.6)
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 #656AD9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.028
- Light Indigo #6D5ACF ΔE 0.040
- Slate Blue #6A5ACD ΔE 0.041
- Royal Blue #4169E1 ΔE 0.045
- Medium Slate Blue #7B68EE ΔE 0.046
- Iris #6258C4 ΔE 0.052
- Cornflower #6A79F7 ΔE 0.056
- Neon Blue #4361EE ΔE 0.060
Use #656AD9 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.