#40446E
Closest named color: Dark Grey Blue (#29465B). oklch(40.3% 0.071 278.6), rgb(64, 68, 110).
Aa
White text reads best on this color (9.25:1).
About this color
#40446E is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.071 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.048 away. White text reads best on it, at 9.25:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.27:1 |
| White text | 9.25:1 |
Values
| HEX | #40446E |
| RGB | rgb(64, 68, 110) |
| HSL | hsl(235, 26%, 34%) |
| OKLCH | oklch(40.3% 0.071 278.6) |
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 #40446E | 9.25:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #40446E | 2.27:1 | Fails | Lc 12.7 | Not readable |
| #40446E text on white | 9.25:1 | AAA | Lc 91.3 | Preferred for body text |
| #40446E text on black | 2.27:1 | Fails | Lc -11.1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#BABFDC
oklch(81% 0.041 277.7)
-
Step 400
400
#979DCA
oklch(70.7% 0.066 278.6)
-
Step 500
500
#7E84BC
oklch(63% 0.084 279)
-
Step 600
600
#676DA8
oklch(55.5% 0.092 278.5)
-
Step 700
700
#565B90
oklch(49% 0.085 278.7)
-
Step 800
800 (this color)
#40446E
oklch(40.3% 0.071 278.6)
-
Step 900
900
#3B3E5F
oklch(37.6% 0.056 279.3)
-
Step 950
950
#222537
oklch(27% 0.034 276.6)
#40446E 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) | #364970 | 0.019 |
| Deuteranopia (no green cones) | #33466D | 0.019 |
| Tritanopia (no blue cones) | #324C54 | 0.061 |
| Achromatopsia (no color) | #474747 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40446E
#40446E
oklch(40.3% 0.071 278.6)
- #524915
#524915
oklch(40.3% 0.071 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 #40446E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.057
- Dusk #4E5481 ΔE 0.058
- Light Navy #155084 ΔE 0.058
- Twilight Blue #0A437A ΔE 0.059
- Twilight #4E518B ΔE 0.062
- Charcoal #264653 ΔE 0.062
- Dusk Blue #26538D ΔE 0.064
Use #40446E 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.