#424753
Closest named color: Charcoal Grey (#3C4142). oklch(39.8% 0.021 267.5), rgb(66, 71, 83).
Aa
White text reads best on this color (9.30:1).
About this color
#424753 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.033 away. White text reads best on it, at 9.30:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #424753 |
| RGB | rgb(66, 71, 83) |
| HSL | hsl(222, 11%, 29%) |
| OKLCH | oklch(39.8% 0.021 267.5) |
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 #424753 | 9.30:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #424753 | 2.25:1 | Fails | Lc 12.5 | Not readable |
| #424753 text on white | 9.30:1 | AAA | Lc 91.5 | Preferred for body text |
| #424753 text on black | 2.25:1 | Fails | Lc -10.9 | 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 900.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
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
#BCC0CB
oklch(80.8% 0.016 269.9)
-
Step 400
400
#99A0B1
oklch(70.6% 0.026 267.8)
-
Step 500
500
#81899E
oklch(63.1% 0.033 268.9)
-
Step 600
600
#6A7389
oklch(55.6% 0.036 267.7)
-
Step 700
700
#586074
oklch(49% 0.034 268)
-
Step 800
800
#484F5E
oklch(42.7% 0.027 265.5)
-
Step 900
900 (this color)
#424753
oklch(39.8% 0.021 267.5)
-
Step 950
950
#23262D
oklch(26.9% 0.014 267)
#424753 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 | 0.004 |
| Deuteranopia (no green cones) | #424653 | 0.003 |
| Tritanopia (no blue cones) | #3E494B | 0.018 |
| Achromatopsia (no color) | #474747 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424753
#424753
oklch(39.8% 0.021 267.5)
- #4C473A
#4C473A
oklch(39.9% 0.022 89.5)
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 #424753, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.037
- Charcoal #264653 ΔE 0.039
- Onyx #343A40 ΔE 0.054
- Dark Teal #014D4E ΔE 0.063
- Deep Teal #00555A ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.066
Use #424753 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.