#596DD3
Closest named color: Dark Periwinkle (#665FD1). oklch(57.1% 0.157 272.2), rgb(89, 109, 211).
Aa
White text reads best on this color (4.61:1).
About this color
#596DD3 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.157 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.036 away. White text reads best on it, at 4.61:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.55:1 |
| White text | 4.61:1 |
Values
| HEX | #596DD3 |
| RGB | rgb(89, 109, 211) |
| HSL | hsl(230, 58%, 59%) |
| OKLCH | oklch(57.1% 0.157 272.2) |
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 #596DD3 | 4.61:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #596DD3 | 4.55:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #596DD3 text on white | 4.61:1 | AA | Lc 71.8 | Content text, not long reading |
| #596DD3 text on black | 4.55:1 | AA | Lc -29.9 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F4
oklch(88.5% 0.04 272.9)
-
Step 300
300
#B0BEEF
oklch(80.8% 0.071 272.3)
-
Step 400
400
#889CE7
oklch(70.7% 0.112 271.9)
-
Step 500
500
#6C81E0
oklch(63.1% 0.145 272.3)
-
Step 600
600 (this color)
#596DD3
oklch(57.1% 0.157 272.2)
-
Step 700
700
#4656B2
oklch(49% 0.146 272.5)
-
Step 800
800
#394790
oklch(42.6% 0.121 272.2)
-
Step 900
900
#313C73
oklch(37.6% 0.095 272.6)
-
Step 950
950
#1C2443
oklch(27% 0.059 271.1)
#596DD3 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) | #3A7AD7 | 0.041 |
| Deuteranopia (no green cones) | #2670D1 | 0.047 |
| Tritanopia (no blue cones) | #008496 | 0.139 |
| Achromatopsia (no color) | #757575 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596DD3
#596DD3
oklch(57.1% 0.157 272.2)
- #907400
#907400
oklch(57% 0.116 91.9)
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 #596DD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.036
- Royal Blue #4169E1 ΔE 0.037
- Slate Blue #6A5ACD ΔE 0.049
- Light Indigo #6D5ACF ΔE 0.050
- Iris #6258C4 ΔE 0.054
- Windows Blue #3778BF ΔE 0.056
- Neon Blue #4361EE ΔE 0.060
- Warm Blue #4B57DB ΔE 0.061
Use #596DD3 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.