#182E7F
Closest named color: Marine Blue (#01386A). oklch(34.2% 0.139 266.8), rgb(24, 46, 127).
Aa
White text reads best on this color (12.09:1).
About this color
#182E7F is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.139 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.048 away. White text reads best on it, at 12.09:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.73:1 |
| White text | 12.09:1 |
Values
| HEX | #182E7F |
| RGB | rgb(24, 46, 127) |
| HSL | hsl(227, 68%, 30%) |
| OKLCH | oklch(34.2% 0.139 266.8) |
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 #182E7F | 12.09:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #182E7F | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #182E7F text on white | 12.09:1 | AAA | Lc 97.1 | Preferred for body text |
| #182E7F text on black | 1.73:1 | 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 900.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#759BFF
oklch(70.6% 0.153 266.8)
-
Step 500
500
#537EFF
oklch(63.1% 0.197 266.8)
-
Step 600
600
#375FF8
oklch(55.6% 0.232 266.9)
-
Step 700
700
#2A4DD8
oklch(49% 0.216 266.7)
-
Step 800
800
#2340AF
oklch(42.6% 0.18 266.8)
-
Step 900
900 (this color)
#182E7F
oklch(34.2% 0.139 266.8)
-
Step 950
950
#132251
oklch(27% 0.088 267)
#182E7F 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) | #003B82 | 0.034 |
| Deuteranopia (no green cones) | #00317D | 0.017 |
| Tritanopia (no blue cones) | #004352 | 0.108 |
| Achromatopsia (no color) | #363636 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182E7F
#182E7F
oklch(34.2% 0.139 266.8)
- #483500
#483500
oklch(34.1% 0.07 86.3)
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 #182E7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.048
- Midnight Blue #191970 ΔE 0.056
- Royal #0C1793 ΔE 0.056
- Marine #042E60 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.075
- Cobalt #1E488F ΔE 0.075
- Sapphire #2138AB ΔE 0.080
Use #182E7F 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.