#404453
Closest named color: Charcoal Grey (#3C4142). oklch(38.9% 0.026 273.4), rgb(64, 68, 83).
Aa
White text reads best on this color (9.67:1).
About this color
#404453 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.030 away. White text reads best on it, at 9.67:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.16:1 |
| White text | 9.67:1 |
Values
| HEX | #404453 |
| RGB | rgb(64, 68, 83) |
| HSL | hsl(227, 13%, 29%) |
| OKLCH | oklch(38.9% 0.026 273.4) |
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 #404453 | 9.67:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #404453 | 2.16:1 | Fails | Lc 11.5 | Not readable |
| #404453 text on white | 9.67:1 | AAA | Lc 92.4 | Preferred for body text |
| #404453 text on black | 2.16:1 | Fails | Lc -10.0 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D7D9E0
oklch(88.6% 0.01 273.3)
-
Step 300
300
#BCC0CE
oklch(80.9% 0.02 273.2)
-
Step 400
400
#9AA0B5
oklch(70.8% 0.031 272.9)
-
Step 500
500
#8188A2
oklch(63% 0.04 273.4)
-
Step 600
600
#6B728D
oklch(55.6% 0.043 273.6)
-
Step 700
700
#595F78
oklch(49% 0.041 274.3)
-
Step 800
800
#494E62
oklch(42.7% 0.034 273.9)
-
Step 900
900 (this color)
#404453
oklch(38.9% 0.026 273.4)
-
Step 950
950
#24262F
oklch(27% 0.017 275.4)
#404453 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) | #404554 | 0.003 |
| Deuteranopia (no green cones) | #3E4453 | 0.003 |
| Tritanopia (no blue cones) | #3C4749 | 0.023 |
| Achromatopsia (no color) | #444444 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404453
#404453
oklch(38.9% 0.026 273.4)
- #494535
#494535
oklch(38.9% 0.026 95.7)
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 #404453, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.032
- Charcoal #264653 ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.043
- Onyx #343A40 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.058
- Dark Teal #014D4E ΔE 0.064
- Deep Teal #00555A ΔE 0.069
Use #404453 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.