#182E56
Closest named color: Marine (#042E60). oklch(30.6% 0.078 261.3), rgb(24, 46, 86).
Aa
White text reads best on this color (13.42:1).
About this color
#182E56 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.078 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.023 away. White text reads best on it, at 13.42:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.56:1 |
| White text | 13.42:1 |
Values
| HEX | #182E56 |
| RGB | rgb(24, 46, 86) |
| HSL | hsl(219, 56%, 22%) |
| OKLCH | oklch(30.6% 0.078 261.3) |
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 #182E56 | 13.42:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #182E56 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #182E56 text on white | 13.42:1 | AAA | Lc 99.7 | Preferred for body text |
| #182E56 text on black | 1.56:1 | 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
#E0EAFC
oklch(93.5% 0.027 262.3)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A0C1FC
oklch(80.8% 0.091 261.8)
-
Step 400
400
#6B9FFB
oklch(70.7% 0.146 261.1)
-
Step 500
500
#4483F9
oklch(63% 0.188 261.6)
-
Step 600
600
#2469E8
oklch(55.5% 0.205 261.4)
-
Step 700
700
#1757CA
oklch(49.2% 0.19 261.2)
-
Step 800
800
#1648A3
oklch(42.8% 0.157 261.2)
-
Step 900
900
#193D81
oklch(37.6% 0.122 261.6)
-
Step 950
950 (this color)
#182E56
oklch(30.6% 0.078 261.3)
#182E56 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) | #1B3258 | 0.014 |
| Deuteranopia (no green cones) | #112C55 | 0.011 |
| Tritanopia (no blue cones) | #00373D | 0.064 |
| Achromatopsia (no color) | #2F2F2F | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182E56
#182E56
oklch(30.6% 0.078 261.3)
- #3F2B00
#3F2B00
oklch(30.5% 0.063 81.1)
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 #182E56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.024
- Marine Blue #01386A ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.043
- Gunmetal #293241 ΔE 0.049
- Midnight Green #073B4C ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.051
- Oxford Blue #1B263B ΔE 0.051
Use #182E56 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.