#18344D
Closest named color: Prussian Blue (#1D3557). oklch(31.6% 0.056 247.6), rgb(24, 52, 77).
Aa
White text reads best on this color (12.82:1).
About this color
#18344D is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.056 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.019 away. White text reads best on it, at 12.82:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.63:1 |
| White text | 12.82:1 |
Values
| HEX | #18344D |
| RGB | rgb(24, 52, 77) |
| HSL | hsl(208, 52%, 20%) |
| OKLCH | oklch(31.6% 0.056 247.6) |
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 #18344D | 12.82:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #18344D | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #18344D text on white | 12.82:1 | AAA | Lc 98.8 | Preferred for body text |
| #18344D text on black | 1.63:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C6DCF1
oklch(88.5% 0.037 247)
-
Step 300
300
#9FC5EA
oklch(80.9% 0.066 248)
-
Step 400
400
#67A6E0
oklch(70.6% 0.108 247.6)
-
Step 500
500
#388FD7
oklch(63.1% 0.136 247.3)
-
Step 600
600
#0077C4
oklch(55.5% 0.148 247.6)
-
Step 700
700
#0064A6
oklch(49.1% 0.131 247.6)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900
#10446E
oklch(37.6% 0.089 247.9)
-
Step 950
950 (this color)
#18344D
oklch(31.6% 0.056 247.6)
#18344D 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) | #29354E | 0.022 |
| Deuteranopia (no green cones) | #22304D | 0.017 |
| Tritanopia (no blue cones) | #003A3D | 0.044 |
| Achromatopsia (no color) | #323232 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18344D
#18344D
oklch(31.6% 0.056 247.6)
- #452C0E
#452C0E
oklch(31.7% 0.057 67.8)
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 #18344D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.019
- Midnight Green #073B4C ΔE 0.025
- Dark Blue Grey #1F3B4D ΔE 0.026
- Gunmetal #293241 ΔE 0.028
- Space Cadet #2B2D42 ΔE 0.034
- Marine #042E60 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.051
- Marine Blue #01386A ΔE 0.051
Use #18344D 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.