#40546B
Closest named color: YInMn Blue (#415A77). oklch(43.9% 0.046 252.3), rgb(64, 84, 107).
Aa
White text reads best on this color (7.78:1).
About this color
#40546B is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.046 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.024 away. White text reads best on it, at 7.78:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.69:1 |
| White text | 7.78:1 |
Values
| HEX | #40546B |
| RGB | rgb(64, 84, 107) |
| HSL | hsl(212, 25%, 34%) |
| OKLCH | oklch(43.9% 0.046 252.3) |
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 #40546B | 7.78:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #40546B | 2.69:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #40546B text on white | 7.78:1 | AAA | Lc 87.0 | Fine for body text |
| #40546B text on black | 2.69:1 | Fails | Lc -15.1 | 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 800.
-
Step 50
50
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B5C2D2
oklch(80.9% 0.027 253.6)
-
Step 400
400
#8EA3BB
oklch(70.7% 0.042 251.9)
-
Step 500
500
#728CAA
oklch(63.1% 0.054 252.3)
-
Step 600
600
#5A7695
oklch(55.6% 0.058 251.4)
-
Step 700
700
#4A637F
oklch(49.1% 0.054 251.7)
-
Step 800
800 (this color)
#40546B
oklch(43.9% 0.046 252.3)
-
Step 900
900
#344354
oklch(37.7% 0.035 251.9)
-
Step 950
950
#1F2731
oklch(27% 0.022 254.2)
#40546B 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) | #4B556C | 0.016 |
| Deuteranopia (no green cones) | #46506B | 0.014 |
| Tritanopia (no blue cones) | #31595C | 0.039 |
| Achromatopsia (no color) | #525252 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40546B
#40546B
oklch(43.9% 0.046 252.3)
- #624E36
#624E36
oklch(43.8% 0.045 71.3)
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 #40546B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.024
- Dusty Grape #545775 ΔE 0.036
- Dusk #4E5481 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.054
- Petrol #005F6A ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.059
- Slate #516572 ΔE 0.059
Use #40546B 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.