#40467D
Closest named color: Dark Slate Blue (#483D8B). oklch(41.6% 0.091 277), rgb(64, 70, 125).
Aa
White text reads best on this color (8.78:1).
About this color
#40467D is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.091 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 8.78:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.39:1 |
| White text | 8.78:1 |
Values
| HEX | #40467D |
| RGB | rgb(64, 70, 125) |
| HSL | hsl(234, 32%, 37%) |
| OKLCH | oklch(41.6% 0.091 277) |
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 #40467D | 8.78:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #40467D | 2.39:1 | Fails | Lc 14.0 | Not readable |
| #40467D text on white | 8.78:1 | AAA | Lc 90.0 | Fine for body text |
| #40467D text on black | 2.39:1 | Fails | Lc -12.3 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8ED
oklch(88.6% 0.029 277.2)
-
Step 300
300
#B7BEE4
oklch(80.9% 0.054 276.9)
-
Step 400
400
#939CD6
oklch(70.7% 0.085 277.2)
-
Step 500
500
#7983CB
oklch(63.2% 0.109 276.8)
-
Step 600
600
#626BB8
oklch(55.6% 0.119 276.7)
-
Step 700
700
#52599E
oklch(49.1% 0.11 277.2)
-
Step 800
800 (this color)
#40467D
oklch(41.6% 0.091 277)
-
Step 900
900
#383D67
oklch(37.6% 0.072 277.2)
-
Step 950
950
#21243C
oklch(27% 0.045 277.5)
#40467D 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) | #314D7F | 0.026 |
| Deuteranopia (no green cones) | #2C487C | 0.026 |
| Tritanopia (no blue cones) | #2A515B | 0.080 |
| Achromatopsia (no color) | #4B4B4B | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40467D
#40467D
oklch(41.6% 0.091 277)
- #594B00
#594B00
oklch(41.5% 0.085 96.8)
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 #40467D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Twilight #4E518B ΔE 0.044
- Blueberry #464196 ΔE 0.046
- Dusk Blue #26538D ΔE 0.047
- Cobalt #1E488F ΔE 0.047
- Dusk #4E5481 ΔE 0.048
- Light Navy #155084 ΔE 0.048
- Twilight Blue #0A437A ΔE 0.057
Use #40467D 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.