#5B668A
Closest named color: Metallic Blue (#4F738E). oklch(51.5% 0.059 271.1), rgb(91, 102, 138).
Aa
White text reads best on this color (5.65:1).
About this color
#5B668A is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.059 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.038 away. White text reads best on it, at 5.65:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.71:1 |
| White text | 5.65:1 |
Values
| HEX | #5B668A |
| RGB | rgb(91, 102, 138) |
| HSL | hsl(226, 21%, 45%) |
| OKLCH | oklch(51.5% 0.059 271.1) |
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 #5B668A | 5.65:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #5B668A | 3.71:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #5B668A text on white | 5.65:1 | AA | Lc 78.3 | Fine for body text |
| #5B668A text on black | 3.71:1 | AA large text | Lc -23.5 | 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 700.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#BAC0D4
oklch(80.9% 0.029 272.4)
-
Step 400
400
#96A0BE
oklch(70.8% 0.045 270.7)
-
Step 500
500
#7C88AD
oklch(63.1% 0.058 270.7)
-
Step 600
600
#657299
oklch(55.7% 0.063 270)
-
Step 700
700 (this color)
#5B668A
oklch(51.5% 0.059 271.1)
-
Step 800
800
#454E6A
oklch(42.8% 0.048 270.5)
-
Step 900
900
#3A4156
oklch(37.8% 0.037 270.2)
-
Step 950
950
#222632
oklch(27% 0.023 270.4)
#5B668A 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) | #5B698C | 0.009 |
| Deuteranopia (no green cones) | #576589 | 0.007 |
| Tritanopia (no blue cones) | #4E6D72 | 0.053 |
| Achromatopsia (no color) | #676767 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B668A
#5B668A
oklch(51.5% 0.059 271.1)
- #74673F
#74673F
oklch(51.6% 0.059 92.1)
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 #5B668A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.038
- Dusky Blue #475F94 ΔE 0.041
- Slate #516572 ΔE 0.042
- Denim #3B638C ΔE 0.042
- Dull Blue #49759C ΔE 0.047
- Muted Blue #3B719F ΔE 0.049
- Dusty Grape #545775 ΔE 0.051
- Dusk #4E5481 ΔE 0.057
Use #5B668A 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.