#40465C
Closest named color: Dark Grey Blue (#29465B). oklch(39.8% 0.038 272.7), rgb(64, 70, 92).
Aa
White text reads best on this color (9.33:1).
About this color
#40465C is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.038 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.032 away. White text reads best on it, at 9.33:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.24:1 |
| White text | 9.33:1 |
Values
| HEX | #40465C |
| RGB | rgb(64, 70, 92) |
| HSL | hsl(227, 18%, 31%) |
| OKLCH | oklch(39.8% 0.038 272.7) |
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 #40465C | 9.33:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #40465C | 2.24:1 | Fails | Lc 12.4 | Not readable |
| #40465C text on white | 9.33:1 | AAA | Lc 91.6 | Preferred for body text |
| #40465C text on black | 2.24:1 | Fails | Lc -10.8 | 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 900.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAF0
oklch(93.7% 0.008 271.3)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#BAC0D4
oklch(80.9% 0.029 272.4)
-
Step 400
400
#979FBE
oklch(70.7% 0.046 273.8)
-
Step 500
500
#7D88AD
oklch(63.1% 0.057 271.8)
-
Step 600
600
#677199
oklch(55.6% 0.063 273.3)
-
Step 700
700
#555F83
oklch(49.2% 0.059 272.1)
-
Step 800
800
#464D6A
oklch(42.6% 0.049 273.7)
-
Step 900
900 (this color)
#40465C
oklch(39.8% 0.038 272.7)
-
Step 950
950
#222632
oklch(27% 0.023 270.4)
#40465C 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) | #3F485D | 0.006 |
| Deuteranopia (no green cones) | #3D465B | 0.005 |
| Tritanopia (no blue cones) | #394A4D | 0.034 |
| Achromatopsia (no color) | #474747 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40465C
#40465C
oklch(39.8% 0.038 272.7)
- #4E472F
#4E472F
oklch(39.8% 0.039 93.8)
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 #40465C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.032
- Charcoal #264653 ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.047
- Onyx #343A40 ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.065
- YInMn Blue #415A77 ΔE 0.067
- Deep Teal #00555A ΔE 0.069
Use #40465C 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.