#596591
Closest named color: Dusky Blue (#475F94). oklch(51.5% 0.071 272), rgb(89, 101, 145).
Aa
White text reads best on this color (5.68:1).
About this color
#596591 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.071 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.032 away. White text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #596591 |
| RGB | rgb(89, 101, 145) |
| HSL | hsl(227, 24%, 46%) |
| OKLCH | oklch(51.5% 0.071 272) |
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 #596591 | 5.68:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #596591 | 3.69:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #596591 text on white | 5.68:1 | AA | Lc 78.4 | Fine for body text |
| #596591 text on black | 3.69:1 | AA large text | Lc -23.4 | 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 700.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B8C0D8
oklch(80.9% 0.035 271)
-
Step 400
400
#949FC4
oklch(70.7% 0.056 272)
-
Step 500
500
#7A87B5
oklch(63.1% 0.071 272)
-
Step 600
600
#6371A1
oklch(55.7% 0.077 271.3)
-
Step 700
700 (this color)
#596591
oklch(51.5% 0.071 272)
-
Step 800
800
#434D70
oklch(42.7% 0.06 271.5)
-
Step 900
900
#39405A
oklch(37.7% 0.046 272.4)
-
Step 950
950
#212635
oklch(27.1% 0.029 270.1)
#596591 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) | #576993 | 0.011 |
| Deuteranopia (no green cones) | #526590 | 0.010 |
| Tritanopia (no blue cones) | #486E75 | 0.064 |
| Achromatopsia (no color) | #676767 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596591
#596591
oklch(51.5% 0.071 272)
- #766634
#766634
oklch(51.4% 0.072 92)
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 #596591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.032
- Denim #3B638C ΔE 0.040
- Metallic Blue #4F738E ΔE 0.044
- Muted Blue #3B719F ΔE 0.045
- Dull Blue #49759C ΔE 0.046
- French Blue #436BAD ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.053
Use #596591 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.