#596CBF
Closest named color: French Blue (#436BAD). oklch(55.6% 0.13 271.9), rgb(89, 108, 191).
Aa
White text reads best on this color (4.85:1).
About this color
#596CBF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.130 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.040 away. White text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #596CBF |
| RGB | rgb(89, 108, 191) |
| HSL | hsl(229, 44%, 55%) |
| OKLCH | oklch(55.6% 0.13 271.9) |
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 #596CBF | 4.85:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #596CBF | 4.32:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #596CBF text on white | 4.85:1 | AA | Lc 73.5 | Content text, not long reading |
| #596CBF text on black | 4.32:1 | AA large text | Lc -28.2 | 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
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D1D8EF
oklch(88.4% 0.033 272.2)
-
Step 300
300
#B3BFE7
oklch(80.9% 0.058 272)
-
Step 400
400
#8C9DDC
oklch(70.7% 0.095 272.2)
-
Step 500
500
#7084D2
oklch(63.1% 0.12 271.7)
-
Step 600
600 (this color)
#596CBF
oklch(55.6% 0.13 271.9)
-
Step 700
700
#495AA5
oklch(49.1% 0.121 271.7)
-
Step 800
800
#3C4A86
oklch(42.8% 0.101 271.7)
-
Step 900
900
#333E6B
oklch(37.7% 0.078 271.8)
-
Step 950
950
#1E253F
oklch(27.1% 0.049 271.4)
#596CBF 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) | #4976C2 | 0.030 |
| Deuteranopia (no green cones) | #3D6DBD | 0.031 |
| Tritanopia (no blue cones) | #287E8C | 0.116 |
| Achromatopsia (no color) | #717171 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596CBF
#596CBF
oklch(55.6% 0.13 271.9)
- #8B7000
#8B7000
oklch(55.5% 0.114 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 #596CBF, closest first.
No curated palette has a color within ΔE 0.04 of #596CBF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.040
- Windows Blue #3778BF ΔE 0.044
- Dark Periwinkle #665FD1 ΔE 0.048
- Iris #6258C4 ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.059
Use #596CBF 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.