#404753
Closest named color: Charcoal Grey (#3C4142). oklch(39.6% 0.022 261.2), rgb(64, 71, 83).
Aa
White text reads best on this color (9.35:1).
About this color
#404753 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.031 away. White text reads best on it, at 9.35:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.24:1 |
| White text | 9.35:1 |
Values
| HEX | #404753 |
| RGB | rgb(64, 71, 83) |
| HSL | hsl(218, 13%, 29%) |
| OKLCH | oklch(39.6% 0.022 261.2) |
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 #404753 | 9.35:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #404753 | 2.24:1 | Fails | Lc 12.3 | Not readable |
| #404753 text on white | 9.35:1 | AAA | Lc 91.6 | Preferred for body text |
| #404753 text on black | 2.24:1 | Fails | Lc -10.7 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D6D9DF
oklch(88.5% 0.009 264.5)
-
Step 300
300
#BBC1CC
oklch(81% 0.017 262.7)
-
Step 400
400
#97A1B2
oklch(70.7% 0.027 261.1)
-
Step 500
500
#7E8A9F
oklch(63.1% 0.035 261.7)
-
Step 600
600
#67748A
oklch(55.6% 0.038 260.9)
-
Step 700
700
#566175
oklch(49.1% 0.035 262.4)
-
Step 800
800
#464F5F
oklch(42.6% 0.029 261.9)
-
Step 900
900 (this color)
#404753
oklch(39.6% 0.022 261.2)
-
Step 950
950
#23272E
oklch(27.2% 0.014 261.7)
#404753 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) | #434854 | 0.006 |
| Deuteranopia (no green cones) | #414653 | 0.003 |
| Tritanopia (no blue cones) | #3B494B | 0.019 |
| Achromatopsia (no color) | #474747 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404753
#404753
oklch(39.6% 0.022 261.2)
- #4D4639
#4D4639
oklch(39.7% 0.023 83)
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 #404753, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.034
- Charcoal #264653 ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.036
- Onyx #343A40 ΔE 0.052
- Dark Teal #014D4E ΔE 0.061
- Deep Teal #00555A ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.064
Use #404753 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.