#182A4C
Closest named color: Oxford Blue (#1B263B). oklch(28.9% 0.067 262), rgb(24, 42, 76).
Aa
White text reads best on this color (14.24:1).
About this color
#182A4C is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.067 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.032 away. White text reads best on it, at 14.24:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.47:1 |
| White text | 14.24:1 |
Values
| HEX | #182A4C |
| RGB | rgb(24, 42, 76) |
| HSL | hsl(219, 52%, 20%) |
| OKLCH | oklch(28.9% 0.067 262) |
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 #182A4C | 14.24:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #182A4C | 1.47:1 | Fails | Lc 0.0 | Not readable |
| #182A4C text on white | 14.24:1 | AAA | Lc 100.8 | Preferred for body text |
| #182A4C text on black | 1.47:1 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF7
oklch(88.5% 0.044 262.4)
-
Step 300
300
#A5C1F5
oklch(80.9% 0.08 262.6)
-
Step 400
400
#74A0EF
oklch(70.7% 0.126 261.5)
-
Step 500
500
#5185EA
oklch(63% 0.162 262.2)
-
Step 600
600
#356DD8
oklch(55.6% 0.175 261.8)
-
Step 700
700
#285ABC
oklch(49.1% 0.164 262)
-
Step 800
800
#224A98
oklch(42.7% 0.136 262)
-
Step 900
900
#213F79
oklch(37.8% 0.105 262.1)
-
Step 950
950 (this color)
#182A4C
oklch(28.9% 0.067 262)
#182A4C 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) | #1B2D4D | 0.011 |
| Deuteranopia (no green cones) | #14284B | 0.009 |
| Tritanopia (no blue cones) | #003237 | 0.057 |
| Achromatopsia (no color) | #2B2B2B | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182A4C
#182A4C
oklch(28.9% 0.067 262)
- #3A2800
#3A2800
oklch(29.1% 0.06 82.4)
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 #182A4C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.036
- Marine #042E60 ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.039
- Gunmetal #293241 ΔE 0.046
- Dark #1B2431 ΔE 0.050
- Midnight Green #073B4C ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.058
Use #182A4C 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.