#424453
Closest named color: Charcoal Grey (#3C4142). oklch(39.1% 0.025 279.2), rgb(66, 68, 83).
Aa
White text reads best on this color (9.61:1).
About this color
#424453 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.025. 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 9.61:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.18:1 |
| White text | 9.61:1 |
Values
| HEX | #424453 |
| RGB | rgb(66, 68, 83) |
| HSL | hsl(233, 11%, 29%) |
| OKLCH | oklch(39.1% 0.025 279.2) |
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 #424453 | 9.61:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #424453 | 2.18:1 | Fails | Lc 11.7 | Not readable |
| #424453 text on white | 9.61:1 | AAA | Lc 92.3 | Preferred for body text |
| #424453 text on black | 2.18:1 | 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
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D7D8E0
oklch(88.4% 0.011 280.5)
-
Step 300
300
#BEC0CD
oklch(81% 0.018 279)
-
Step 400
400
#9C9FB4
oklch(70.7% 0.031 279.1)
-
Step 500
500
#8487A1
oklch(63% 0.039 280)
-
Step 600
600
#6E718C
oklch(55.6% 0.042 280)
-
Step 700
700
#5C5F77
oklch(49.2% 0.038 279.3)
-
Step 800
800
#4B4D61
oklch(42.6% 0.033 280.4)
-
Step 900
900 (this color)
#424453
oklch(39.1% 0.025 279.2)
-
Step 950
950
#25262E
oklch(27.1% 0.015 279.7)
#424453 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 | 0.004 |
| Deuteranopia (no green cones) | #3F4453 | 0.005 |
| Tritanopia (no blue cones) | #3E4749 | 0.023 |
| Achromatopsia (no color) | #454545 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424453
#424453
oklch(39.1% 0.025 279.2)
- #484636
#484636
oklch(39.1% 0.026 101.6)
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 #424453, 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 0.035
- Charcoal #264653 ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.045
- Onyx #343A40 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.061
- Dark Teal #014D4E ΔE 0.067
- Deep Teal #00555A ΔE 0.071
Use #424453 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.