#243744
Closest named color: Gunmetal (#293241). oklch(32.6% 0.034 239), rgb(36, 55, 68).
Aa
White text reads best on this color (12.31:1).
About this color
#243744 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.034 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.017 away. White text reads best on it, at 12.31:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.70:1 |
| White text | 12.31:1 |
Values
| HEX | #243744 |
| RGB | rgb(36, 55, 68) |
| HSL | hsl(204, 31%, 20%) |
| OKLCH | oklch(32.6% 0.034 239) |
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 #243744 | 12.31:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #243744 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #243744 text on white | 12.31:1 | AAA | Lc 98.0 | Preferred for body text |
| #243744 text on black | 1.70:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B2C3CF
oklch(80.8% 0.025 238.5)
-
Step 400
400
#8AA5B8
oklch(70.8% 0.041 238.8)
-
Step 500
500
#6D8EA6
oklch(63.1% 0.052 240.2)
-
Step 600
600
#547891
oklch(55.5% 0.056 239.4)
-
Step 700
700
#44657B
oklch(49% 0.052 238.4)
-
Step 800
800
#385364
oklch(42.8% 0.043 236.8)
-
Step 900
900 (this color)
#243744
oklch(32.6% 0.034 239)
-
Step 950
950
#1D2830
oklch(27% 0.021 240.1)
#243744 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) | #313745 | 0.019 |
| Deuteranopia (no green cones) | #2D3344 | 0.018 |
| Tritanopia (no blue cones) | #183A3B | 0.026 |
| Achromatopsia (no color) | #353535 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #243744
#243744
oklch(32.6% 0.034 239)
- #423023
#423023
oklch(32.6% 0.034 57)
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 #243744, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.017
- Dark Blue Grey #1F3B4D ΔE 0.018
- Midnight Green #073B4C ΔE 0.027
- Onyx #343A40 ΔE 0.028
- Space Cadet #2B2D42 ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.037
- Charcoal #264653 ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.053
Use #243744 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.