#403441
Closest named color: Onyx (#343A40). oklch(34.3% 0.028 323.7), rgb(64, 52, 65).
Aa
White text reads best on this color (11.76:1).
About this color
#403441 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.028 away. White text reads best on it, at 11.76:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.78:1 |
| White text | 11.76:1 |
Values
| HEX | #403441 |
| RGB | rgb(64, 52, 65) |
| HSL | hsl(295, 11%, 23%) |
| OKLCH | oklch(34.3% 0.028 323.7) |
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 #403441 | 11.76:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #403441 | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #403441 text on white | 11.76:1 | AAA | Lc 97.0 | Preferred for body text |
| #403441 text on black | 1.78:1 | Fails | Lc 0.0 | 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#ECE8EC
oklch(93.5% 0.007 325.6)
-
Step 200
200
#DDD7DD
oklch(88.6% 0.01 325.7)
-
Step 300
300
#C7BCC8
oklch(80.8% 0.021 323.3)
-
Step 400
400
#AB9AAD
oklch(70.7% 0.033 322.6)
-
Step 500
500
#978198
oklch(63.1% 0.043 324.7)
-
Step 600
600
#816A83
oklch(55.5% 0.047 323.6)
-
Step 700
700
#6D596F
oklch(49.2% 0.042 323.3)
-
Step 800
800
#59495A
oklch(42.8% 0.034 324.3)
-
Step 900
900 (this color)
#403441
oklch(34.3% 0.028 323.7)
-
Step 950
950
#2B242B
oklch(27.1% 0.016 326)
#403441 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) | #333742 | 0.023 |
| Deuteranopia (no green cones) | #363841 | 0.021 |
| Tritanopia (no blue cones) | #413538 | 0.017 |
| Achromatopsia (no color) | #383838 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403441
#403441
oklch(34.3% 0.028 323.7)
- #303D30
#303D30
oklch(34.4% 0.028 144.9)
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 #403441, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.028
- Gunmetal #293241 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.052
- Charcoal #264653 ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.064
- Dark Grey Blue #29465B ΔE 0.066
Use #403441 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.