#183453
Closest named color: Prussian Blue (#1D3557). oklch(32% 0.065 252.6), rgb(24, 52, 83).
Aa
White text reads best on this color (12.68:1).
About this color
#183453 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.065 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.010 away. White text reads best on it, at 12.68:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.68:1 |
Values
| HEX | #183453 |
| RGB | rgb(24, 52, 83) |
| HSL | hsl(212, 55%, 21%) |
| OKLCH | oklch(32% 0.065 252.6) |
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 #183453 | 12.68:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #183453 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #183453 text on white | 12.68:1 | AAA | Lc 98.6 | Preferred for body text |
| #183453 text on black | 1.65:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DCF5
oklch(88.6% 0.042 251.7)
-
Step 300
300
#9DC4F2
oklch(80.8% 0.078 252.9)
-
Step 400
400
#65A4EB
oklch(70.6% 0.123 252.5)
-
Step 500
500
#358BE5
oklch(63% 0.158 252.6)
-
Step 600
600
#0073D2
oklch(55.5% 0.17 252.7)
-
Step 700
700
#0061B2
oklch(49.2% 0.149 252.5)
-
Step 800
800
#004F93
oklch(42.7% 0.13 252.6)
-
Step 900
900
#0E4276
oklch(37.6% 0.103 252.8)
-
Step 950
950 (this color)
#183453
oklch(32% 0.065 252.6)
#183453 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) | #263654 | 0.019 |
| Deuteranopia (no green cones) | #1E3052 | 0.013 |
| Tritanopia (no blue cones) | #003B3F | 0.052 |
| Achromatopsia (no color) | #333333 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #183453
#183453
oklch(32% 0.065 252.6)
- #472D03
#472D03
oklch(32.1% 0.066 73.3)
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 #183453, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.010
- Dark Blue Grey #1F3B4D ΔE 0.030
- Midnight Green #073B4C ΔE 0.031
- Gunmetal #293241 ΔE 0.036
- Marine #042E60 ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.039
- Marine Blue #01386A ΔE 0.041
- Oxford Blue #1B263B ΔE 0.056
Use #183453 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.