#596991
Closest named color: Metallic Blue (#4F738E). oklch(52.4% 0.066 267.3), rgb(89, 105, 145).
Aa
White text reads best on this color (5.44:1).
About this color
#596991 is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.066 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.033 away. White text reads best on it, at 5.44:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.85:1 |
| White text | 5.44:1 |
Values
| HEX | #596991 |
| RGB | rgb(89, 105, 145) |
| HSL | hsl(223, 24%, 46%) |
| OKLCH | oklch(52.4% 0.066 267.3) |
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 #596991 | 5.44:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #596991 | 3.85:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #596991 text on white | 5.44:1 | AA | Lc 77.2 | Fine for body text |
| #596991 text on black | 3.85:1 | AA large text | Lc -24.6 | 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
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E4
oklch(88.5% 0.016 266.3)
-
Step 300
300
#B8C0D5
oklch(80.8% 0.031 269.1)
-
Step 400
400
#93A0BF
oklch(70.6% 0.048 267.3)
-
Step 500
500
#7989AF
oklch(63.1% 0.06 266.9)
-
Step 600
600 (this color)
#596991
oklch(52.4% 0.066 267.3)
-
Step 700
700
#516084
oklch(49.1% 0.061 266.7)
-
Step 800
800
#424E6B
oklch(42.6% 0.051 266.9)
-
Step 900
900
#384157
oklch(37.7% 0.04 267.2)
-
Step 950
950
#212633
oklch(27% 0.025 268.3)
#596991 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) | #5C6C93 | 0.010 |
| Deuteranopia (no green cones) | #566790 | 0.007 |
| Tritanopia (no blue cones) | #487177 | 0.059 |
| Achromatopsia (no color) | #6A6A6A | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596991
#596991
oklch(52.4% 0.066 267.3)
- #7A683B
#7A683B
oklch(52.4% 0.067 88.3)
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 #596991, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.033
- Dull Blue #49759C ΔE 0.037
- Muted Blue #3B719F ΔE 0.040
- Dusky Blue #475F94 ΔE 0.041
- Denim #3B638C ΔE 0.044
- Flat Blue #3C73A8 ΔE 0.047
- French Blue #436BAD ΔE 0.049
- Stormy Blue #507B9C ΔE 0.050
Use #596991 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.