#3B596B
Closest named color: YInMn Blue (#415A77). oklch(44.8% 0.046 235.6), rgb(59, 89, 107).
Aa
White text reads best on this color (7.42:1).
About this color
#3B596B is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.046 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.022 away. White text reads best on it, at 7.42:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.82:1 |
| White text | 7.42:1 |
Values
| HEX | #3B596B |
| RGB | rgb(59, 89, 107) |
| HSL | hsl(203, 29%, 33%) |
| OKLCH | oklch(44.8% 0.046 235.6) |
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 #3B596B | 7.42:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #3B596B | 2.82:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #3B596B text on white | 7.42:1 | AAA | Lc 85.8 | Fine for body text |
| #3B596B text on black | 2.82:1 | Fails | Lc -16.3 | 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 800.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B1C4D0
oklch(81% 0.027 235.4)
-
Step 400
400
#87A5B8
oklch(70.6% 0.043 236)
-
Step 500
500
#698FA7
oklch(63.1% 0.056 236.5)
-
Step 600
600
#507992
oklch(55.6% 0.06 236.1)
-
Step 700
700
#40667C
oklch(49.1% 0.056 234.9)
-
Step 800
800 (this color)
#3B596B
oklch(44.8% 0.046 235.6)
-
Step 900
900
#2F4552
oklch(37.8% 0.035 234.9)
-
Step 950
950
#1C2830
oklch(26.9% 0.022 237.9)
#3B596B 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) | #51586C | 0.030 |
| Deuteranopia (no green cones) | #4A536B | 0.026 |
| Tritanopia (no blue cones) | #285E5F | 0.036 |
| Achromatopsia (no color) | #555555 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B596B
#3B596B
oklch(44.8% 0.046 235.6)
- #694E3C
#694E3C
oklch(44.8% 0.046 54.9)
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 #3B596B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.022
- Dusty Grape #545775 ΔE 0.040
- Petrol #005F6A ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.048
- Slate #516572 ΔE 0.049
- Dusk #4E5481 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.054
- Denim #3B638C ΔE 0.055
Use #3B596B 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.