#303648
Closest named color: Gunmetal (#293241). oklch(33.5% 0.033 270.2), rgb(48, 54, 72).
Aa
White text reads best on this color (12.02:1).
About this color
#303648 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.033 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.021 away. White text reads best on it, at 12.02:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.74:1 |
| White text | 12.02:1 |
Values
| HEX | #303648 |
| RGB | rgb(48, 54, 72) |
| HSL | hsl(225, 20%, 24%) |
| OKLCH | oklch(33.5% 0.033 270.2) |
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 #303648 | 12.02:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #303648 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #303648 text on white | 12.02:1 | AAA | Lc 97.5 | Preferred for body text |
| #303648 text on black | 1.74:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#BAC0D1
oklch(80.8% 0.025 270.3)
-
Step 400
400
#97A0BA
oklch(70.7% 0.039 270.3)
-
Step 500
500
#7D88A9
oklch(63% 0.051 270.5)
-
Step 600
600
#677294
oklch(55.6% 0.055 270.6)
-
Step 700
700
#55607E
oklch(49.2% 0.05 268.9)
-
Step 800
800
#464E67
oklch(42.7% 0.043 270.7)
-
Step 900
900 (this color)
#303648
oklch(33.5% 0.033 270.2)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#303648 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) | #303749 | 0.003 |
| Deuteranopia (no green cones) | #2E3548 | 0.005 |
| Tritanopia (no blue cones) | #2A393C | 0.029 |
| Achromatopsia (no color) | #363636 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #303648
#303648
oklch(33.5% 0.033 270.2)
- #3D3623
#3D3623
oklch(33.5% 0.032 90.1)
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 #303648, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.021
- Onyx #343A40 ΔE 0.023
- Dark Blue Grey #1F3B4D ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.037
- Midnight Green #073B4C ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.047
- Charcoal #264653 ΔE 0.050
Use #303648 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.