#596C8A
Closest named color: Metallic Blue (#4F738E). oklch(52.8% 0.053 259.4), rgb(89, 108, 138).
Aa
White text reads best on this color (5.33:1).
About this color
#596C8A is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.053 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.022 away. White text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #596C8A |
| RGB | rgb(89, 108, 138) |
| HSL | hsl(217, 22%, 45%) |
| OKLCH | oklch(52.8% 0.053 259.4) |
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 #596C8A | 5.33:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #596C8A | 3.93:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #596C8A text on white | 5.33:1 | AA | Lc 76.5 | Fine for body text |
| #596C8A text on black | 3.93:1 | AA large text | Lc -25.2 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4D9E2
oklch(88.4% 0.013 262.4)
-
Step 300
300
#B8C1D0
oklch(80.9% 0.023 260.7)
-
Step 400
400
#93A2B9
oklch(70.8% 0.038 258.9)
-
Step 500
500
#788BA7
oklch(63.2% 0.048 258)
-
Step 600
600 (this color)
#596C8A
oklch(52.8% 0.053 259.4)
-
Step 700
700
#50627D
oklch(49.2% 0.049 258.3)
-
Step 800
800
#425066
oklch(42.8% 0.041 259.3)
-
Step 900
900
#384253
oklch(37.7% 0.032 261)
-
Step 950
950
#212730
oklch(27.1% 0.019 258.4)
#596C8A 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) | #626E8B | 0.014 |
| Deuteranopia (no green cones) | #5C6989 | 0.009 |
| Tritanopia (no blue cones) | #4A7276 | 0.046 |
| Achromatopsia (no color) | #6B6B6B | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596C8A
#596C8A
oklch(52.8% 0.053 259.4)
- #7C6848
#7C6848
oklch(52.8% 0.053 79)
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 #596C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.022
- Dull Blue #49759C ΔE 0.035
- Slate #516572 ΔE 0.042
- Muted Blue #3B719F ΔE 0.043
- Stormy Blue #507B9C ΔE 0.045
- Cerulean #457B9D ΔE 0.047
- Battleship Gray #6C757D ΔE 0.048
- Denim #3B638C ΔE 0.049
Use #596C8A 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.