#596FBD
Closest named color: Windows Blue (#3778BF). oklch(56.1% 0.124 270.2), rgb(89, 111, 189).
Aa
White text reads best on this color (4.73:1).
About this color
#596FBD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.124 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.039 away. White text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.43:1 |
| White text | 4.73:1 |
Values
| HEX | #596FBD |
| RGB | rgb(89, 111, 189) |
| HSL | hsl(227, 43%, 55%) |
| OKLCH | oklch(56.1% 0.124 270.2) |
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 #596FBD | 4.73:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #596FBD | 4.43:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #596FBD text on white | 4.73:1 | AA | Lc 72.7 | Content text, not long reading |
| #596FBD 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B2C0E6
oklch(81% 0.056 269.2)
-
Step 400
400
#8B9ED9
oklch(70.7% 0.089 270.3)
-
Step 500
500
#6F85CE
oklch(63.1% 0.113 270.2)
-
Step 600
600 (this color)
#596FBD
oklch(56.1% 0.124 270.2)
-
Step 700
700
#485BA2
oklch(49.1% 0.116 270.4)
-
Step 800
800
#3B4B83
oklch(42.8% 0.095 270)
-
Step 900
900
#323F69
oklch(37.7% 0.074 269.6)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#596FBD 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) | #4F78C0 | 0.025 |
| Deuteranopia (no green cones) | #446FBB | 0.024 |
| Tritanopia (no blue cones) | #29808D | 0.110 |
| Achromatopsia (no color) | #737373 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596FBD
#596FBD
oklch(56.1% 0.124 270.2)
- #8F7100
#8F7100
oklch(56.2% 0.115 90.2)
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 #596FBD, closest first.
No curated palette has a color within ΔE 0.04 of #596FBD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.039
- French Blue #436BAD ΔE 0.039
- Flat Blue #3C73A8 ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.056
- Mid Blue #276AB3 ΔE 0.056
- Steel Blue #4682B4 ΔE 0.059
- Muted Blue #3B719F ΔE 0.061
- Cool Blue #4984B8 ΔE 0.061
Use #596FBD 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.