#40536D
Closest named color: YInMn Blue (#415A77). oklch(43.7% 0.049 256.4), rgb(64, 83, 109).
Aa
White text reads best on this color (7.84:1).
About this color
#40536D is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.049 and its hue 256°. 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 7.84:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.67:1 |
| White text | 7.84:1 |
Values
| HEX | #40536D |
| RGB | rgb(64, 83, 109) |
| HSL | hsl(215, 26%, 34%) |
| OKLCH | oklch(43.7% 0.049 256.4) |
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 #40536D | 7.84:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #40536D | 2.67:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #40536D text on white | 7.84:1 | AAA | Lc 87.2 | Fine for body text |
| #40536D text on black | 2.67:1 | Fails | Lc -14.9 | Not readable |
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
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B5C2D4
oklch(81% 0.029 256.5)
-
Step 400
400
#8EA2BE
oklch(70.6% 0.047 256.8)
-
Step 500
500
#728BAD
oklch(63% 0.059 256.2)
-
Step 600
600
#5B7599
oklch(55.6% 0.064 256.6)
-
Step 700
700
#4A6282
oklch(49% 0.059 255.8)
-
Step 800
800 (this color)
#40536D
oklch(43.7% 0.049 256.4)
-
Step 900
900
#344356
oklch(37.8% 0.038 254.6)
-
Step 950
950
#1F2732
oklch(27% 0.024 256.4)
#40536D 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) | #49546E | 0.014 |
| Deuteranopia (no green cones) | #44506C | 0.010 |
| Tritanopia (no blue cones) | #31595C | 0.044 |
| Achromatopsia (no color) | #525252 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40536D
#40536D
oklch(43.7% 0.049 256.4)
- #614E32
#614E32
oklch(43.6% 0.049 76.6)
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 #40536D, 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 0.035
- Dusk #4E5481 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.056
- Dark Slate Gray #2F4F4F ΔE 0.057
- Twilight #4E518B ΔE 0.057
- Petrol #005F6A ΔE 0.057
Use #40536D 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.