#305165
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.8% 0.051 236.4), rgb(48, 81, 101).
Aa
White text reads best on this color (8.43:1).
About this color
#305165 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.051 and its hue 236°. 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 8.43:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.49:1 |
| White text | 8.43:1 |
Values
| HEX | #305165 |
| RGB | rgb(48, 81, 101) |
| HSL | hsl(203, 36%, 29%) |
| OKLCH | oklch(41.8% 0.051 236.4) |
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 #305165 | 8.43:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #305165 | 2.49:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #305165 text on white | 8.43:1 | AAA | Lc 89.0 | Fine for body text |
| #305165 text on black | 2.49:1 | Fails | Lc -13.2 | 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
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AFC4D2
oklch(80.9% 0.03 237)
-
Step 400
400
#85A6BB
oklch(70.8% 0.048 236.3)
-
Step 500
500
#6590AA
oklch(63.2% 0.061 235.6)
-
Step 600
600
#4C7995
oklch(55.5% 0.066 237)
-
Step 700
700
#3C667F
oklch(49% 0.062 236.1)
-
Step 800
800 (this color)
#305165
oklch(41.8% 0.051 236.4)
-
Step 900
900
#2C4554
oklch(37.7% 0.04 235.6)
-
Step 950
950
#1A2831
oklch(26.8% 0.025 237.2)
#305165 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) | #485066 | 0.032 |
| Deuteranopia (no green cones) | #404B65 | 0.026 |
| Tritanopia (no blue cones) | #155658 | 0.039 |
| Achromatopsia (no color) | #4D4D4D | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305165
#305165
oklch(41.8% 0.051 236.4)
- #624531
#624531
oklch(41.7% 0.051 55.4)
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 #305165, 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 0.038
- Deep Teal #00555A ΔE 0.041
- Charcoal #264653 ΔE 0.044
- YInMn Blue #415A77 ΔE 0.045
- Petrol #005F6A ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.052
- Dark Teal #014D4E ΔE 0.056
Use #305165 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.