#182A3A
Closest named color: Oxford Blue (#1B263B). oklch(27.7% 0.038 246.5), rgb(24, 42, 58).
Aa
White text reads best on this color (14.67:1).
About this color
#182A3A is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.038 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.015 away. White text reads best on it, at 14.67:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.67:1 |
Values
| HEX | #182A3A |
| RGB | rgb(24, 42, 58) |
| HSL | hsl(208, 41%, 16%) |
| OKLCH | oklch(27.7% 0.038 246.5) |
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 #182A3A | 14.67:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #182A3A | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #182A3A text on white | 14.67:1 | AAA | Lc 101.4 | Preferred for body text |
| #182A3A text on black | 1.43:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#AAC4DD
oklch(80.9% 0.045 247.3)
-
Step 400
400
#7CA5CC
oklch(70.7% 0.073 247.6)
-
Step 500
500
#598FBE
oklch(63.2% 0.092 246.2)
-
Step 600
600
#3D78AB
oklch(55.6% 0.101 246.9)
-
Step 700
700
#2E6592
oklch(49.1% 0.093 246)
-
Step 800
800
#285277
oklch(42.6% 0.078 247.4)
-
Step 900
900
#254460
oklch(37.6% 0.061 247.4)
-
Step 950
950 (this color)
#182A3A
oklch(27.7% 0.038 246.5)
#182A3A 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) | #232A3B | 0.016 |
| Deuteranopia (no green cones) | #1F273A | 0.013 |
| Tritanopia (no blue cones) | #072E2F | 0.033 |
| Achromatopsia (no color) | #282828 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182A3A
#182A3A
oklch(27.7% 0.038 246.5)
- #352413
#352413
oklch(27.6% 0.038 65.1)
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 #182A3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.015
- Dark #1B2431 ΔE 0.023
- Jet #212529 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.035
- Gunmetal #293241 ΔE 0.040
- Midnight Green #073B4C ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.060
Use #182A3A 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.