#355164
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.1% 0.046 239), rgb(53, 81, 100).
Aa
White text reads best on this color (8.35:1).
About this color
#355164 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.046 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.037 away. White text reads best on it, at 8.35:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #355164 |
| RGB | rgb(53, 81, 100) |
| HSL | hsl(204, 31%, 30%) |
| OKLCH | oklch(42.1% 0.046 239) |
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 #355164 | 8.35:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #355164 | 2.51:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #355164 text on white | 8.35:1 | AAA | Lc 88.8 | Fine for body text |
| #355164 text on black | 2.51:1 | Fails | Lc -13.4 | 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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B1C3D0
oklch(80.8% 0.027 239.2)
-
Step 400
400
#88A5B9
oklch(70.7% 0.044 238.4)
-
Step 500
500
#6A8FA8
oklch(63.2% 0.056 238.3)
-
Step 600
600
#527993
oklch(55.7% 0.06 238.4)
-
Step 700
700
#42657D
oklch(49% 0.056 239.4)
-
Step 800
800 (this color)
#355164
oklch(42.1% 0.046 239)
-
Step 900
900
#304453
oklch(37.6% 0.036 241.3)
-
Step 950
950
#1C2830
oklch(26.9% 0.022 237.9)
#355164 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) | #495165 | 0.028 |
| Deuteranopia (no green cones) | #424C64 | 0.022 |
| Tritanopia (no blue cones) | #225657 | 0.037 |
| Achromatopsia (no color) | #4E4E4E | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355164
#355164
oklch(42.1% 0.046 239)
- #604734
#604734
oklch(42% 0.045 58.4)
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 #355164, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.040
- YInMn Blue #415A77 ΔE 0.042
- Deep Teal #00555A ΔE 0.045
- Charcoal #264653 ΔE 0.047
- Petrol #005F6A ΔE 0.049
- Dusty Grape #545775 ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.056
Use #355164 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.