#596D7C
Closest named color: Slate (#516572). oklch(52.4% 0.034 240.7), rgb(89, 109, 124).
Aa
White text reads best on this color (5.38:1).
About this color
#596D7C is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.034 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.029 away. White text reads best on it, at 5.38:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.90:1 |
| White text | 5.38:1 |
Values
| HEX | #596D7C |
| RGB | rgb(89, 109, 124) |
| HSL | hsl(206, 16%, 42%) |
| OKLCH | oklch(52.4% 0.034 240.7) |
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 #596D7C | 5.38:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #596D7C | 3.90:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #596D7C text on white | 5.38:1 | AA | Lc 76.8 | Fine for body text |
| #596D7C text on black | 3.90:1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
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
#B8C2CA
oklch(80.9% 0.016 241.8)
-
Step 400
400
#94A3AF
oklch(70.8% 0.024 242)
-
Step 500
500
#798C9B
oklch(63% 0.032 241.9)
-
Step 600
600 (this color)
#596D7C
oklch(52.4% 0.034 240.7)
-
Step 700
700
#516371
oklch(49% 0.031 241.7)
-
Step 800
800
#43515C
oklch(42.7% 0.025 241.9)
-
Step 900
900
#38434B
oklch(37.6% 0.02 239.7)
-
Step 950
950
#21272C
oklch(26.9% 0.013 243.3)
#596D7C 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) | #676D7D | 0.020 |
| Deuteranopia (no green cones) | #62697C | 0.016 |
| Tritanopia (no blue cones) | #4F7172 | 0.027 |
| Achromatopsia (no color) | #6A6A6A | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596D7C
#596D7C
oklch(52.4% 0.034 240.7)
- #796657
#796657
oklch(52.4% 0.033 60.3)
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 #596D7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.029
- Metallic Blue #4F738E ΔE 0.030
- Dim Gray #696969 ΔE 0.034
- Battleship Gray #6C757D ΔE 0.038
- Dull Blue #49759C ΔE 0.051
- Grey Blue #647D8E ΔE 0.052
- Battleship Grey #6B7C85 ΔE 0.053
- Stormy Blue #507B9C ΔE 0.055
Use #596D7C 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.