#5B6A8A
Closest named color: Metallic Blue (#4F738E). oklch(52.5% 0.054 265.1), rgb(91, 106, 138).
Aa
White text reads best on this color (5.42:1).
About this color
#5B6A8A is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.054 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.028 away. White text reads best on it, at 5.42:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.87:1 |
| White text | 5.42:1 |
Values
| HEX | #5B6A8A |
| RGB | rgb(91, 106, 138) |
| HSL | hsl(221, 21%, 45%) |
| OKLCH | oklch(52.5% 0.054 265.1) |
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 #5B6A8A | 5.42:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #5B6A8A | 3.87:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #5B6A8A text on white | 5.42:1 | AA | Lc 77.0 | Fine for body text |
| #5B6A8A text on black | 3.87:1 | AA large text | Lc -24.7 | 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
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#B9C1D1
oklch(81% 0.024 264.4)
-
Step 400
400
#95A1BA
oklch(70.8% 0.039 265)
-
Step 500
500
#7B89A8
oklch(63% 0.05 265.9)
-
Step 600
600 (this color)
#5B6A8A
oklch(52.5% 0.054 265.1)
-
Step 700
700
#53607E
oklch(49% 0.051 266.3)
-
Step 800
800
#444F66
oklch(42.7% 0.041 264.8)
-
Step 900
900
#394253
oklch(37.8% 0.032 263)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#5B6A8A 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) | #5F6C8B | 0.009 |
| Deuteranopia (no green cones) | #5B6889 | 0.006 |
| Tritanopia (no blue cones) | #4D7075 | 0.047 |
| Achromatopsia (no color) | #6A6A6A | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6A8A
#5B6A8A
oklch(52.5% 0.054 265.1)
- #796846
#796846
oklch(52.5% 0.054 84.1)
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 #5B6A8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.028
- Dull Blue #49759C ΔE 0.039
- Slate #516572 ΔE 0.042
- Muted Blue #3B719F ΔE 0.046
- Denim #3B638C ΔE 0.048
- Dusky Blue #475F94 ΔE 0.050
- Stormy Blue #507B9C ΔE 0.050
- Battleship Gray #6C757D ΔE 0.051
Use #5B6A8A 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.