#182A45
Closest named color: Oxford Blue (#1B263B). oklch(28.4% 0.055 258.3), rgb(24, 42, 69).
Aa
White text reads best on this color (14.42:1).
About this color
#182A45 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.055 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.020 away. White text reads best on it, at 14.42:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.45:1 |
| White text | 14.42:1 |
Values
| HEX | #182A45 |
| RGB | rgb(24, 42, 69) |
| HSL | hsl(216, 48%, 18%) |
| OKLCH | oklch(28.4% 0.055 258.3) |
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 #182A45 | 14.42:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #182A45 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #182A45 text on white | 14.42:1 | AAA | Lc 101.1 | Preferred for body text |
| #182A45 text on black | 1.45:1 | 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
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A7C2EB
oklch(80.8% 0.065 258.6)
-
Step 400
400
#77A2E2
oklch(70.7% 0.105 258.1)
-
Step 500
500
#5489D9
oklch(63% 0.134 258.4)
-
Step 600
600
#3872C7
oklch(55.7% 0.145 258.1)
-
Step 700
700
#2A5FAC
oklch(49.1% 0.135 258.1)
-
Step 800
800
#244E8B
oklch(42.7% 0.112 258)
-
Step 900
900
#22416F
oklch(37.6% 0.087 258.2)
-
Step 950
950 (this color)
#182A45
oklch(28.4% 0.055 258.3)
#182A45 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) | #1F2C46 | 0.012 |
| Deuteranopia (no green cones) | #192844 | 0.006 |
| Tritanopia (no blue cones) | #003034 | 0.048 |
| Achromatopsia (no color) | #2A2A2A | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182A45
#182A45
oklch(28.4% 0.055 258.3)
- #392603
#392603
oklch(28.5% 0.056 78.2)
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 #182A45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.020
- Space Cadet #2B2D42 ΔE 0.032
- Dark #1B2431 ΔE 0.038
- Gunmetal #293241 ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.045
- Marine #042E60 ΔE 0.050
- Jet #212529 ΔE 0.051
- Midnight Green #073B4C ΔE 0.055
Use #182A45 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.