#404456
Closest named color: Dark Grey Blue (#29465B). oklch(39% 0.031 275.1), rgb(64, 68, 86).
Aa
White text reads best on this color (9.63:1).
About this color
#404456 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.031 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 9.63:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.17:1 |
| White text | 9.63:1 |
Values
| HEX | #404456 |
| RGB | rgb(64, 68, 86) |
| HSL | hsl(229, 15%, 29%) |
| OKLCH | oklch(39% 0.031 275.1) |
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 #404456 | 9.63:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #404456 | 2.17:1 | Fails | Lc 11.6 | Not readable |
| #404456 text on white | 9.63:1 | AAA | Lc 92.3 | Preferred for body text |
| #404456 text on black | 2.17:1 | Fails | Lc -10.1 | 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 900.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8E9EE
oklch(93.5% 0.007 277.2)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BCC0D0
oklch(81% 0.023 274.7)
-
Step 400
400
#999FB8
oklch(70.6% 0.037 274.8)
-
Step 500
500
#8188A7
oklch(63.2% 0.047 275)
-
Step 600
600
#6A7192
oklch(55.5% 0.052 275.3)
-
Step 700
700
#585F7C
oklch(49.1% 0.047 274)
-
Step 800
800
#484D65
oklch(42.6% 0.04 275.4)
-
Step 900
900 (this color)
#404456
oklch(39% 0.031 275.1)
-
Step 950
950
#232630
oklch(27% 0.019 272)
#404456 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) | #3F4657 | 0.006 |
| Deuteranopia (no green cones) | #3D4456 | 0.005 |
| Tritanopia (no blue cones) | #3B474A | 0.027 |
| Achromatopsia (no color) | #454545 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404456
#404456
oklch(39% 0.031 275.1)
- #4A4532
#4A4532
oklch(39% 0.031 95.1)
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 #404456, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Charcoal Grey #3C4142 ΔE 0.035
- Charcoal #264653 ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.046
- Onyx #343A40 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.059
- Dark Teal #014D4E ΔE 0.067
- Deep Teal #00555A ΔE 0.070
Use #404456 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.