#596E7B
Closest named color: Metallic Blue (#4F738E). oklch(52.6% 0.032 235.4), rgb(89, 110, 123).
Aa
White text reads best on this color (5.32:1).
About this color
#596E7B is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.032 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.030 away. White text reads best on it, at 5.32:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.94:1 |
| White text | 5.32:1 |
Values
| HEX | #596E7B |
| RGB | rgb(89, 110, 123) |
| HSL | hsl(203, 16%, 42%) |
| OKLCH | oklch(52.6% 0.032 235.4) |
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 #596E7B | 5.32:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #596E7B | 3.94:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #596E7B text on white | 5.32:1 | AA | Lc 76.5 | Fine for body text |
| #596E7B text on black | 3.94:1 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADE
oklch(88.5% 0.009 236.6)
-
Step 300
300
#B8C2C9
oklch(80.8% 0.015 238.1)
-
Step 400
400
#93A3AD
oklch(70.6% 0.023 235.2)
-
Step 500
500
#798D99
oklch(63.2% 0.029 234.3)
-
Step 600
600 (this color)
#596E7B
oklch(52.6% 0.032 235.4)
-
Step 700
700
#516470
oklch(49.2% 0.03 235.9)
-
Step 800
800
#42515B
oklch(42.6% 0.025 237.4)
-
Step 900
900
#38434B
oklch(37.6% 0.02 239.7)
-
Step 950
950
#21272C
oklch(26.9% 0.013 243.3)
#596E7B 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) | #686D7C | 0.021 |
| Deuteranopia (no green cones) | #63697B | 0.019 |
| Tritanopia (no blue cones) | #4F7172 | 0.024 |
| Achromatopsia (no color) | #6B6B6B | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596E7B
#596E7B
oklch(52.6% 0.032 235.4)
- #7A6659
#7A6659
oklch(52.6% 0.033 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 #596E7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.030
- Slate #516572 ΔE 0.031
- Dim Gray #696969 ΔE 0.033
- Battleship Gray #6C757D ΔE 0.035
- Battleship Grey #6B7C85 ΔE 0.050
- Grey Blue #647D8E ΔE 0.051
- Dull Blue #49759C ΔE 0.052
- Stormy Blue #507B9C ΔE 0.055
Use #596E7B 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.