#182C53
Closest named color: Marine (#042E60). oklch(29.9% 0.075 262.3), rgb(24, 44, 83).
Aa
White text reads best on this color (13.77:1).
About this color
#182C53 is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.075 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.027 away. White text reads best on it, at 13.77:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.52:1 |
| White text | 13.77:1 |
Values
| HEX | #182C53 |
| RGB | rgb(24, 44, 83) |
| HSL | hsl(220, 55%, 21%) |
| OKLCH | oklch(29.9% 0.075 262.3) |
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 #182C53 | 13.77:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #182C53 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #182C53 text on white | 13.77:1 | AAA | Lc 100.2 | Preferred for body text |
| #182C53 text on black | 1.52:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A2C1FB
oklch(80.9% 0.089 262.7)
-
Step 400
400
#6F9FF9
oklch(70.8% 0.142 262.1)
-
Step 500
500
#4983F6
oklch(63% 0.183 262.3)
-
Step 600
600
#2D69E5
oklch(55.5% 0.199 262.5)
-
Step 700
700
#2057C7
oklch(49.1% 0.184 262.3)
-
Step 800
800
#1C48A1
oklch(42.8% 0.153 262.3)
-
Step 900
900
#1C3D80
oklch(37.7% 0.12 262.5)
-
Step 950
950 (this color)
#182C53
oklch(29.9% 0.075 262.3)
#182C53 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) | #1A3055 | 0.013 |
| Deuteranopia (no green cones) | #102A52 | 0.012 |
| Tritanopia (no blue cones) | #00353B | 0.063 |
| Achromatopsia (no color) | #2D2D2D | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182C53
#182C53
oklch(29.9% 0.075 262.3)
- #3D2A00
#3D2A00
oklch(30% 0.062 82)
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 #182C53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.045
- Gunmetal #293241 ΔE 0.049
- Marine Blue #01386A ΔE 0.050
- Midnight Green #073B4C ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.055
Use #182C53 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.