#353E4F
Closest named color: Onyx (#343A40). oklch(36.3% 0.032 263), rgb(53, 62, 79).
Aa
White text reads best on this color (10.75:1).
About this color
#353E4F is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.032 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.026 away. White text reads best on it, at 10.75:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #353E4F |
| RGB | rgb(53, 62, 79) |
| HSL | hsl(219, 20%, 26%) |
| OKLCH | oklch(36.3% 0.032 263) |
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 #353E4F | 10.75:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #353E4F | 1.95:1 | Fails | Lc 9.0 | Not readable |
| #353E4F text on white | 10.75:1 | AAA | Lc 94.9 | Preferred for body text |
| #353E4F text on black | 1.95:1 | Fails | Lc -7.7 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E2
oklch(88.4% 0.013 262.4)
-
Step 300
300
#B9C1D1
oklch(81% 0.024 264.4)
-
Step 400
400
#94A1B9
oklch(70.7% 0.038 262.8)
-
Step 500
500
#7A8AA8
oklch(63.1% 0.049 262.9)
-
Step 600
600
#637493
oklch(55.7% 0.053 262.3)
-
Step 700
700
#52617D
oklch(49.1% 0.049 262.7)
-
Step 800
800
#434F66
oklch(42.7% 0.041 263.2)
-
Step 900
900 (this color)
#353E4F
oklch(36.3% 0.032 263)
-
Step 950
950
#212731
oklch(27.1% 0.021 260.6)
#353E4F 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) | #383F50 | 0.006 |
| Deuteranopia (no green cones) | #363D4F | 0.003 |
| Tritanopia (no blue cones) | #2E4144 | 0.027 |
| Achromatopsia (no color) | #3E3E3E | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353E4F
#353E4F
oklch(36.3% 0.032 263)
- #463D2B
#463D2B
oklch(36.4% 0.032 84.3)
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 #353E4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.026
- Charcoal #264653 ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.029
- Dark Grey Blue #29465B ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.033
- Gunmetal #293241 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.050
- Midnight Green #073B4C ΔE 0.051
Use #353E4F 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.