#353A45
Closest named color: Onyx (#343A40). oklch(34.8% 0.02 266), rgb(53, 58, 69).
Aa
White text reads best on this color (11.39:1).
About this color
#353A45 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.009 away. White text reads best on it, at 11.39:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.39:1 |
Values
| HEX | #353A45 |
| RGB | rgb(53, 58, 69) |
| HSL | hsl(221, 13%, 24%) |
| OKLCH | oklch(34.8% 0.02 266) |
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 #353A45 | 11.39:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #353A45 | 1.84:1 | Fails | Lc 7.6 | Not readable |
| #353A45 text on white | 11.39:1 | AAA | Lc 96.3 | Preferred for body text |
| #353A45 text on black | 1.84:1 | 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
#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
#BCC1CB
oklch(81% 0.015 264.5)
-
Step 400
400
#99A1B0
oklch(70.7% 0.024 263.2)
-
Step 500
500
#81899D
oklch(63% 0.031 268.2)
-
Step 600
600
#6A7388
oklch(55.6% 0.034 266.9)
-
Step 700
700
#586173
oklch(49.2% 0.031 264.2)
-
Step 800
800
#484F5E
oklch(42.7% 0.027 265.5)
-
Step 900
900 (this color)
#353A45
oklch(34.8% 0.02 266)
-
Step 950
950
#23262D
oklch(26.9% 0.014 267)
#353A45 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) | #373B46 | 0.005 |
| Deuteranopia (no green cones) | #353945 | 0.003 |
| Tritanopia (no blue cones) | #313C3E | 0.017 |
| Achromatopsia (no color) | #3A3A3A | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353A45
#353A45
oklch(34.8% 0.02 266)
- #3F392E
#3F392E
oklch(34.7% 0.02 82.7)
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 #353A45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.009
- Charcoal Grey #3C4142 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.031
- Gunmetal #293241 ΔE 0.034
- Charcoal #264653 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.047
- Midnight Green #073B4C ΔE 0.049
Use #353A45 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.