#182A4B
Closest named color: Oxford Blue (#1B263B). oklch(28.8% 0.065 261.6), rgb(24, 42, 75).
Aa
White text reads best on this color (14.26:1).
About this color
#182A4B is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.065 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.030 away. White text reads best on it, at 14.26:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.47:1 |
| White text | 14.26:1 |
Values
| HEX | #182A4B |
| RGB | rgb(24, 42, 75) |
| HSL | hsl(219, 52%, 19%) |
| OKLCH | oklch(28.8% 0.065 261.6) |
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 #182A4B | 14.26:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #182A4B | 1.47:1 | Fails | Lc 0.0 | Not readable |
| #182A4B text on white | 14.26:1 | AAA | Lc 100.9 | Preferred for body text |
| #182A4B 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
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A5C1F3
oklch(80.8% 0.077 261.9)
-
Step 400
400
#75A0ED
oklch(70.7% 0.123 261.5)
-
Step 500
500
#5186E8
oklch(63.1% 0.158 261.6)
-
Step 600
600
#366DD6
oklch(55.5% 0.172 261.8)
-
Step 700
700
#285BB9
oklch(49.1% 0.159 261.3)
-
Step 800
800
#234B96
oklch(42.8% 0.131 261.5)
-
Step 900
900
#213F77
oklch(37.7% 0.102 261.6)
-
Step 950
950 (this color)
#182A4B
oklch(28.8% 0.065 261.6)
#182A4B 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) | #1C2D4C | 0.012 |
| Deuteranopia (no green cones) | #14284A | 0.009 |
| Tritanopia (no blue cones) | #003136 | 0.055 |
| Achromatopsia (no color) | #2A2A2A | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182A4B
#182A4B
oklch(28.8% 0.065 261.6)
- #3A2700
#3A2700
oklch(28.8% 0.06 80.5)
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 #182A4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.036
- Marine #042E60 ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.040
- Gunmetal #293241 ΔE 0.045
- Dark #1B2431 ΔE 0.048
- Midnight Green #073B4C ΔE 0.056
- Dark Blue Grey #1F3B4D ΔE 0.058
Use #182A4B 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.