#596E8F
Closest named color: Metallic Blue (#4F738E). oklch(53.4% 0.058 259.3), rgb(89, 110, 143).
Aa
White text reads best on this color (5.18:1).
About this color
#596E8F is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.058 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.019 away. White text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.05:1 |
| White text | 5.18:1 |
Values
| HEX | #596E8F |
| RGB | rgb(89, 110, 143) |
| HSL | hsl(217, 23%, 45%) |
| OKLCH | oklch(53.4% 0.058 259.3) |
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 #596E8F | 5.18:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #596E8F | 4.05:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #596E8F text on white | 5.18:1 | AA | Lc 75.7 | Fine for body text |
| #596E8F text on black | 4.05:1 | AA large text | Lc -26.1 | 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
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B7C1D2
oklch(80.8% 0.026 261.1)
-
Step 400
400
#91A2BB
oklch(70.7% 0.041 257.9)
-
Step 500
500
#768BAA
oklch(63.2% 0.053 258)
-
Step 600
600 (this color)
#596E8F
oklch(53.4% 0.058 259.3)
-
Step 700
700
#4E6280
oklch(49.2% 0.054 258.3)
-
Step 800
800
#405068
oklch(42.8% 0.045 258.3)
-
Step 900
900
#374254
oklch(37.7% 0.034 260.2)
-
Step 950
950
#202731
oklch(27% 0.021 257.3)
#596E8F 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) | #627091 | 0.014 |
| Deuteranopia (no green cones) | #5D6B8E | 0.009 |
| Tritanopia (no blue cones) | #487579 | 0.051 |
| Achromatopsia (no color) | #6D6D6D | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596E8F
#596E8F
oklch(53.4% 0.058 259.3)
- #7F6946
#7F6946
oklch(53.3% 0.057 78.7)
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 #596E8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.019
- Dull Blue #49759C ΔE 0.028
- Stormy Blue #507B9C ΔE 0.038
- Muted Blue #3B719F ΔE 0.039
- Cerulean #457B9D ΔE 0.041
- Flat Blue #3C73A8 ΔE 0.047
- Battleship Gray #6C757D ΔE 0.048
- Grey Blue #647D8E ΔE 0.049
Use #596E8F 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.