#182D45
Closest named color: Oxford Blue (#1B263B). oklch(29.2% 0.052 252.9), rgb(24, 45, 69).
Aa
White text reads best on this color (13.99:1).
About this color
#182D45 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.052 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.026 away. White text reads best on it, at 13.99:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.50:1 |
| White text | 13.99:1 |
Values
| HEX | #182D45 |
| RGB | rgb(24, 45, 69) |
| HSL | hsl(212, 48%, 18%) |
| OKLCH | oklch(29.2% 0.052 252.9) |
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 #182D45 | 13.99:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #182D45 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #182D45 text on white | 13.99:1 | AAA | Lc 100.5 | Preferred for body text |
| #182D45 text on black | 1.50:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBF0
oklch(88.5% 0.034 253.7)
-
Step 300
300
#A5C4E8
oklch(81% 0.061 252.4)
-
Step 400
400
#74A4DD
oklch(70.7% 0.099 253.3)
-
Step 500
500
#4E8CD3
oklch(63.1% 0.125 253.2)
-
Step 600
600
#2F75C0
oklch(55.6% 0.136 252.8)
-
Step 700
700
#2162A6
oklch(49.1% 0.127 252.8)
-
Step 800
800
#1D5086
oklch(42.6% 0.105 252.7)
-
Step 900
900
#1E436C
oklch(37.7% 0.082 252.9)
-
Step 950
950 (this color)
#182D45
oklch(29.2% 0.052 252.9)
#182D45 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) | #232E46 | 0.016 |
| Deuteranopia (no green cones) | #1D2A45 | 0.011 |
| Tritanopia (no blue cones) | #003236 | 0.043 |
| Achromatopsia (no color) | #2C2C2C | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182D45
#182D45
oklch(29.2% 0.052 252.9)
- #3B270A
#3B270A
oklch(29.1% 0.052 72.9)
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 #182D45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.028
- Gunmetal #293241 ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.039
- Dark #1B2431 ΔE 0.042
- Midnight Green #073B4C ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.048
- Marine #042E60 ΔE 0.050
Use #182D45 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.