#596B8A
Closest named color: Metallic Blue (#4F738E). oklch(52.5% 0.054 261.2), rgb(89, 107, 138).
Aa
White text reads best on this color (5.39:1).
About this color
#596B8A is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.054 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.024 away. White text reads best on it, at 5.39:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.89:1 |
| White text | 5.39:1 |
Values
| HEX | #596B8A |
| RGB | rgb(89, 107, 138) |
| HSL | hsl(218, 22%, 45%) |
| OKLCH | oklch(52.5% 0.054 261.2) |
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 #596B8A | 5.39:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #596B8A | 3.89:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #596B8A text on white | 5.39:1 | AA | Lc 76.9 | Fine for body text |
| #596B8A text on black | 3.89:1 | AA large text | Lc -24.9 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E2
oklch(88.4% 0.013 262.4)
-
Step 300
300
#B8C1D1
oklch(80.9% 0.025 262.1)
-
Step 400
400
#93A1B9
oklch(70.6% 0.039 261.3)
-
Step 500
500
#798AA8
oklch(63.1% 0.049 261.7)
-
Step 600
600 (this color)
#596B8A
oklch(52.5% 0.054 261.2)
-
Step 700
700
#51617E
oklch(49.1% 0.051 262.1)
-
Step 800
800
#424F66
oklch(42.6% 0.042 261.7)
-
Step 900
900
#384253
oklch(37.7% 0.032 261)
-
Step 950
950
#212731
oklch(27.1% 0.021 260.6)
#596B8A 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) | #606D8B | 0.012 |
| Deuteranopia (no green cones) | #5B6889 | 0.009 |
| Tritanopia (no blue cones) | #4A7175 | 0.048 |
| Achromatopsia (no color) | #6A6A6A | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596B8A
#596B8A
oklch(52.5% 0.054 261.2)
- #7A6846
#7A6846
oklch(52.6% 0.054 82.8)
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 #596B8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.024
- Dull Blue #49759C ΔE 0.037
- Slate #516572 ΔE 0.041
- Muted Blue #3B719F ΔE 0.044
- Denim #3B638C ΔE 0.047
- Stormy Blue #507B9C ΔE 0.047
- Cerulean #457B9D ΔE 0.050
- Battleship Gray #6C757D ΔE 0.050
Use #596B8A 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.