#243643
Closest named color: Gunmetal (#293241). oklch(32.3% 0.033 240.4), rgb(36, 54, 67).
Aa
White text reads best on this color (12.47:1).
About this color
#243643 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.033 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.014 away. White text reads best on it, at 12.47:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.68:1 |
| White text | 12.47:1 |
Values
| HEX | #243643 |
| RGB | rgb(36, 54, 67) |
| HSL | hsl(205, 30%, 20%) |
| OKLCH | oklch(32.3% 0.033 240.4) |
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 #243643 | 12.47:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #243643 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #243643 text on white | 12.47:1 | AAA | Lc 98.3 | Preferred for body text |
| #243643 text on black | 1.68:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC5D8
oklch(81% 0.039 239.7)
-
Step 400
400
#7DA6C4
oklch(70.6% 0.063 240.5)
-
Step 500
500
#5B90B5
oklch(63.1% 0.08 240.2)
-
Step 600
600
#3F7AA1
oklch(55.7% 0.087 239.8)
-
Step 700
700
#31668A
oklch(49% 0.081 240.8)
-
Step 800
800
#295470
oklch(42.8% 0.067 239.5)
-
Step 900
900
#26455B
oklch(37.7% 0.053 241)
-
Step 950
950 (this color)
#243643
oklch(32.3% 0.033 240.4)
#243643 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) | #303644 | 0.018 |
| Deuteranopia (no green cones) | #2C3243 | 0.017 |
| Tritanopia (no blue cones) | #18393A | 0.027 |
| Achromatopsia (no color) | #343434 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #243643
#243643
oklch(32.3% 0.033 240.4)
- #403022
#403022
oklch(32.3% 0.033 62.4)
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 #243643, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.014
- Dark Blue Grey #1F3B4D ΔE 0.021
- Midnight Green #073B4C ΔE 0.029
- Onyx #343A40 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.030
- Prussian Blue #1D3557 ΔE 0.038
- Charcoal #264653 ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.055
Use #243643 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.