#51546E
Closest named color: Dusty Grape (#545775). oklch(45.4% 0.043 279.4), rgb(81, 84, 110).
Aa
White text reads best on this color (7.38:1).
About this color
#51546E is a medium-dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.043 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.014 away. White text reads best on it, at 7.38:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #51546E |
| RGB | rgb(81, 84, 110) |
| HSL | hsl(234, 15%, 37%) |
| OKLCH | oklch(45.4% 0.043 279.4) |
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 #51546E | 7.38:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #51546E | 2.84:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #51546E text on white | 7.38:1 | AAA | Lc 85.7 | Fine for body text |
| #51546E text on black | 2.84:1 | Fails | Lc -16.4 | 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 800.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D7D8E2
oklch(88.4% 0.014 281.5)
-
Step 300
300
#BDBFD1
oklch(80.9% 0.025 280.8)
-
Step 400
400
#9B9EBA
oklch(70.6% 0.041 280.5)
-
Step 500
500
#8387A8
oklch(63.2% 0.05 279.5)
-
Step 600
600
#6C7094
oklch(55.6% 0.056 279.5)
-
Step 700
700
#5A5E7E
oklch(49.1% 0.051 278.8)
-
Step 800
800 (this color)
#51546E
oklch(45.4% 0.043 279.4)
-
Step 900
900
#3E4053
oklch(37.7% 0.033 280)
-
Step 950
950
#242531
oklch(26.9% 0.022 281.1)
#51546E 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) | #4D576F | 0.010 |
| Deuteranopia (no green cones) | #4B556D | 0.010 |
| Tritanopia (no blue cones) | #4A595D | 0.038 |
| Achromatopsia (no color) | #565656 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51546E
#51546E
oklch(45.4% 0.043 279.4)
- #5C573B
#5C573B
oklch(45.4% 0.043 99.3)
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 #51546E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.014
- YInMn Blue #415A77 ΔE 0.027
- Dusk #4E5481 ΔE 0.032
- Slate #516572 ΔE 0.051
- Twilight #4E518B ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.056
- Denim #3B638C ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.062
Use #51546E 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.