#404C60
Closest named color: Dark Grey Blue (#29465B). oklch(41.4% 0.037 260.6), rgb(64, 76, 96).
Aa
White text reads best on this color (8.67:1).
About this color
#404C60 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.037 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.039 away. White text reads best on it, at 8.67:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.42:1 |
| White text | 8.67:1 |
Values
| HEX | #404C60 |
| RGB | rgb(64, 76, 96) |
| HSL | hsl(218, 20%, 31%) |
| OKLCH | oklch(41.4% 0.037 260.6) |
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 #404C60 | 8.67:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #404C60 | 2.42:1 | Fails | Lc 14.2 | Not readable |
| #404C60 text on white | 8.67:1 | AAA | Lc 89.8 | Fine for body text |
| #404C60 text on black | 2.42:1 | Fails | Lc -12.5 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#B9C1CF
oklch(80.9% 0.022 261.8)
-
Step 400
400
#94A1B7
oklch(70.6% 0.035 261)
-
Step 500
500
#7A8AA5
oklch(63% 0.045 260.9)
-
Step 600
600
#637490
oklch(55.6% 0.048 260.3)
-
Step 700
700
#52617B
oklch(49% 0.046 261.3)
-
Step 800
800 (this color)
#404C60
oklch(41.4% 0.037 260.6)
-
Step 900
900
#394251
oklch(37.7% 0.028 260.6)
-
Step 950
950
#212730
oklch(27.1% 0.019 258.4)
#404C60 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) | #454D61 | 0.009 |
| Deuteranopia (no green cones) | #424A60 | 0.007 |
| Tritanopia (no blue cones) | #375053 | 0.032 |
| Achromatopsia (no color) | #4B4B4B | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404C60
#404C60
oklch(41.4% 0.037 260.6)
- #564A34
#564A34
oklch(41.5% 0.038 82.3)
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 #404C60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.042
- Charcoal #264653 ΔE 0.046
- YInMn Blue #415A77 ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.054
- Dusty Grape #545775 ΔE 0.055
- Deep Teal #00555A ΔE 0.060
- Dusk #4E5481 ΔE 0.061
Use #404C60 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.