#606ACC
Closest named color: Dark Periwinkle (#665FD1). oklch(56.5% 0.15 276.1), rgb(96, 106, 204).
Aa
White text reads best on this color (4.73:1).
About this color
#606ACC is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.150 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.029 away. White text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.43:1 |
| White text | 4.73:1 |
Values
| HEX | #606ACC |
| RGB | rgb(96, 106, 204) |
| HSL | hsl(234, 51%, 59%) |
| OKLCH | oklch(56.5% 0.15 276.1) |
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 #606ACC | 4.73:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #606ACC | 4.43:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #606ACC text on white | 4.73:1 | AA | Lc 72.7 | Content text, not long reading |
| #606ACC text on black | 4.43:1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D8F2
oklch(88.6% 0.036 275.3)
-
Step 300
300
#B4BEED
oklch(81% 0.067 275.4)
-
Step 400
400
#8E9AE4
oklch(70.6% 0.109 276.2)
-
Step 500
500
#7480DC
oklch(63.2% 0.138 276.1)
-
Step 600
600 (this color)
#606ACC
oklch(56.5% 0.15 276.1)
-
Step 700
700
#4D55AE
oklch(49% 0.14 276.1)
-
Step 800
800
#3F468D
oklch(42.6% 0.116 276.1)
-
Step 900
900
#353C70
oklch(37.7% 0.089 275.5)
-
Step 950
950
#1F2342
oklch(26.9% 0.058 276.3)
#606ACC 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) | #3C78D0 | 0.048 |
| Deuteranopia (no green cones) | #306FCA | 0.051 |
| Tritanopia (no blue cones) | #2E8091 | 0.133 |
| Achromatopsia (no color) | #737373 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #606ACC
#606ACC
oklch(56.5% 0.15 276.1)
- #8A7500
#8A7500
oklch(56.5% 0.116 96.5)
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 #606ACC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.029
- Slate Blue #6A5ACD ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.042
- Iris #6258C4 ΔE 0.045
- Royal Blue #4169E1 ΔE 0.048
- Windows Blue #3778BF ΔE 0.060
- French Blue #436BAD ΔE 0.062
- Warm Blue #4B57DB ΔE 0.063
Use #606ACC 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.