#303040
Closest named color: Gunmetal (#293241). oklch(31.6% 0.028 284.7), rgb(48, 48, 64).
Aa
White text reads best on this color (12.94:1).
About this color
#303040 is a dark close to neutral grey. In OKLCH its lightness is 32%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.012 away. White text reads best on it, at 12.94:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.62:1 |
| White text | 12.94:1 |
Values
| HEX | #303040 |
| RGB | rgb(48, 48, 64) |
| HSL | hsl(240, 14%, 22%) |
| OKLCH | oklch(31.6% 0.028 284.7) |
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 #303040 | 12.94:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #303040 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #303040 text on white | 12.94:1 | AAA | Lc 99.2 | Preferred for body text |
| #303040 text on black | 1.62:1 | 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 950.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D7D8E5
oklch(88.5% 0.018 282.5)
-
Step 300
300
#BEBED6
oklch(80.9% 0.034 285.6)
-
Step 400
400
#9C9CC2
oklch(70.6% 0.055 284.9)
-
Step 500
500
#8484B2
oklch(63.1% 0.069 284.3)
-
Step 600
600
#6E6D9E
oklch(55.5% 0.075 284.6)
-
Step 700
700
#5C5B87
oklch(49.1% 0.07 284.6)
-
Step 800
800
#4B4B6E
oklch(42.8% 0.058 283.7)
-
Step 900
900
#3F3E59
oklch(37.7% 0.046 285.7)
-
Step 950
950 (this color)
#303040
oklch(31.6% 0.028 284.7)
#303040 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) | #2C3241 | 0.009 |
| Deuteranopia (no green cones) | #2B3140 | 0.009 |
| Tritanopia (no blue cones) | #2C3335 | 0.026 |
| Achromatopsia (no color) | #313131 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #303040
#303040
oklch(31.6% 0.028 284.7)
- #343322
#343322
oklch(31.7% 0.028 105.1)
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 #303040, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.012
- Space Cadet #2B2D42 ΔE 0.015
- Onyx #343A40 ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.051
- Midnight Green #073B4C ΔE 0.052
- Jet #212529 ΔE 0.058
Use #303040 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.