#183444
Closest named color: Gunmetal (#293241). oklch(31.1% 0.045 235.7), rgb(24, 52, 68).
Aa
White text reads best on this color (13.01:1).
About this color
#183444 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.045 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.022 away. White text reads best on it, at 13.01:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.61:1 |
| White text | 13.01:1 |
Values
| HEX | #183444 |
| RGB | rgb(24, 52, 68) |
| HSL | hsl(202, 48%, 18%) |
| OKLCH | oklch(31.1% 0.045 235.7) |
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 #183444 | 13.01:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #183444 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #183444 text on white | 13.01:1 | AAA | Lc 99.1 | Preferred for body text |
| #183444 text on black | 1.61:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DDEA
oklch(88.6% 0.029 234.9)
-
Step 300
300
#A1C7DE
oklch(81% 0.052 234.9)
-
Step 400
400
#6BA9CE
oklch(70.7% 0.084 235.9)
-
Step 500
500
#3C93C2
oklch(63.1% 0.108 235.9)
-
Step 600
600
#087CAE
oklch(55.5% 0.118 236.1)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#035679
oklch(42.8% 0.09 235.1)
-
Step 900
900
#124762
oklch(37.8% 0.071 235.8)
-
Step 950
950 (this color)
#183444
oklch(31.1% 0.045 235.7)
#183444 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) | #2C3445 | 0.027 |
| Deuteranopia (no green cones) | #262F44 | 0.023 |
| Tritanopia (no blue cones) | #003839 | 0.033 |
| Achromatopsia (no color) | #313131 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #183444
#183444
oklch(31.1% 0.045 235.7)
- #422A1A
#422A1A
oklch(31% 0.045 54)
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 #183444, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.022
- Midnight Green #073B4C ΔE 0.025
- Dark Blue Grey #1F3B4D ΔE 0.028
- Space Cadet #2B2D42 ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.046
- Onyx #343A40 ΔE 0.047
- Dark #1B2431 ΔE 0.057
Use #183444 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.