#404C69
Closest named color: YInMn Blue (#415A77). oklch(41.9% 0.051 266.9), rgb(64, 76, 105).
Aa
White text reads best on this color (8.55:1).
About this color
#404C69 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.051 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.044 away. White text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #404C69 |
| RGB | rgb(64, 76, 105) |
| HSL | hsl(222, 24%, 33%) |
| OKLCH | oklch(41.9% 0.051 266.9) |
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 #404C69 | 8.55:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #404C69 | 2.45:1 | Fails | Lc 14.6 | Not readable |
| #404C69 text on white | 8.55:1 | AAA | Lc 89.4 | Fine for body text |
| #404C69 text on black | 2.45:1 | Fails | Lc -12.9 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E4
oklch(88.5% 0.016 266.3)
-
Step 300
300
#B8C1D5
oklch(81% 0.03 266.3)
-
Step 400
400
#93A0BF
oklch(70.6% 0.048 267.3)
-
Step 500
500
#7989AF
oklch(63.1% 0.06 266.9)
-
Step 600
600
#62729B
oklch(55.5% 0.067 267.8)
-
Step 700
700
#516084
oklch(49.1% 0.061 266.7)
-
Step 800
800 (this color)
#404C69
oklch(41.9% 0.051 266.9)
-
Step 900
900
#384157
oklch(37.7% 0.04 267.2)
-
Step 950
950
#212633
oklch(27% 0.025 268.3)
#404C69 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) | #424E6A | 0.007 |
| Deuteranopia (no green cones) | #3E4B68 | 0.005 |
| Tritanopia (no blue cones) | #335256 | 0.046 |
| Achromatopsia (no color) | #4C4C4C | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404C69
#404C69
oklch(41.9% 0.051 266.9)
- #594B2B
#594B2B
oklch(41.9% 0.051 86.6)
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 #404C69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.044
- Dusk #4E5481 ΔE 0.049
- Dusty Grape #545775 ΔE 0.049
- Charcoal #264653 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.055
- Light Navy #155084 ΔE 0.058
- Light Navy Blue #2E5A88 ΔE 0.059
Use #404C69 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.