#243443
Closest named color: Gunmetal (#293241). oklch(31.8% 0.034 247.3), rgb(36, 52, 67).
Aa
White text reads best on this color (12.74:1).
About this color
#243443 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.034 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.009 away. White text reads best on it, at 12.74:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.64:1 |
| White text | 12.74:1 |
Values
| HEX | #243443 |
| RGB | rgb(36, 52, 67) |
| HSL | hsl(209, 30%, 20%) |
| OKLCH | oklch(31.8% 0.034 247.3) |
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 #243443 | 12.74:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #243443 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #243443 text on white | 12.74:1 | AAA | Lc 98.8 | Preferred for body text |
| #243443 text on black | 1.64:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ACC4DA
oklch(80.9% 0.041 246)
-
Step 400
400
#80A5C8
oklch(70.7% 0.066 247.3)
-
Step 500
500
#5F8EB9
oklch(63% 0.083 247.1)
-
Step 600
600
#4578A5
oklch(55.7% 0.089 246.8)
-
Step 700
700
#36658E
oklch(49.2% 0.084 246.8)
-
Step 800
800
#2D5273
oklch(42.6% 0.07 247.2)
-
Step 900
900
#29445D
oklch(37.7% 0.054 247.6)
-
Step 950
950 (this color)
#243443
oklch(31.8% 0.034 247.3)
#243443 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) | #2E3444 | 0.015 |
| Deuteranopia (no green cones) | #2A3143 | 0.013 |
| Tritanopia (no blue cones) | #193739 | 0.028 |
| Achromatopsia (no color) | #323232 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #243443
#243443
oklch(31.8% 0.034 247.3)
- #3E2F1F
#3E2F1F
oklch(31.8% 0.034 67.9)
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 #243443, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.009
- Space Cadet #2B2D42 ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.025
- Midnight Green #073B4C ΔE 0.032
- Onyx #343A40 ΔE 0.034
- Prussian Blue #1D3557 ΔE 0.036
- Oxford Blue #1B263B ΔE 0.050
- Charcoal #264653 ΔE 0.060
Use #243443 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.