#596FC1
Closest named color: Windows Blue (#3778BF). oklch(56.3% 0.129 270.5), rgb(89, 111, 193).
Aa
White text reads best on this color (4.69:1).
About this color
#596FC1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.129 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.040 away. White text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.46:1 |
| White text | 4.69:1 |
Values
| HEX | #596FC1 |
| RGB | rgb(89, 111, 193) |
| HSL | hsl(227, 46%, 55%) |
| OKLCH | oklch(56.3% 0.129 270.5) |
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 #596FC1 | 4.69:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #596FC1 | 4.46:1 | AA large text | Lc 31.6 | Non-text elements, placeholder text |
| #596FC1 text on white | 4.69:1 | AA | Lc 72.5 | Content text, not long reading |
| #596FC1 text on black | 4.46:1 | AA large text | Lc -29.2 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D1D9EF
oklch(88.6% 0.031 269.8)
-
Step 300
300
#B2BFE7
oklch(80.8% 0.058 270.9)
-
Step 400
400
#8A9EDB
oklch(70.7% 0.093 270)
-
Step 500
500
#6E84D1
oklch(63% 0.119 270.6)
-
Step 600
600 (this color)
#596FC1
oklch(56.3% 0.129 270.5)
-
Step 700
700
#475AA4
oklch(49% 0.12 270.6)
-
Step 800
800
#3B4A85
oklch(42.7% 0.099 270.9)
-
Step 900
900
#323E6B
oklch(37.6% 0.079 270.9)
-
Step 950
950
#1D253E
oklch(27% 0.048 269.5)
#596FC1 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) | #4D78C4 | 0.026 |
| Deuteranopia (no green cones) | #406FBF | 0.028 |
| Tritanopia (no blue cones) | #24818E | 0.117 |
| Achromatopsia (no color) | #747474 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596FC1
#596FC1
oklch(56.3% 0.129 270.5)
- #8F7200
#8F7200
oklch(56.4% 0.115 91)
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 #596FC1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.040
- French Blue #436BAD ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.054
- Mid Blue #276AB3 ΔE 0.058
- Iris #6258C4 ΔE 0.059
- Royal Blue #4169E1 ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.061
Use #596FC1 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.