#09183F
Closest named color: Navy Blue (#001146). oklch(22.4% 0.077 264.8), rgb(9, 24, 63).
Aa
White text reads best on this color (17.29:1).
About this color
#09183F is a very dark, moderately saturated blue. In OKLCH its lightness is 22%, its chroma 0.077 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.029 away. White text reads best on it, at 17.29:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.21:1 |
| White text | 17.29:1 |
Values
| HEX | #09183F |
| RGB | rgb(9, 24, 63) |
| HSL | hsl(223, 75%, 14%) |
| OKLCH | oklch(22.4% 0.077 264.8) |
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 #09183F | 17.29:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #09183F | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #09183F text on white | 17.29:1 | AAA | Lc 103.9 | Preferred for body text |
| #09183F text on black | 1.21:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A4C0FD
oklch(80.9% 0.092 265.3)
-
Step 400
400
#739DFC
oklch(70.7% 0.147 264.9)
-
Step 500
500
#5081F9
oklch(63.1% 0.187 264.8)
-
Step 600
600
#3666E8
oklch(55.5% 0.204 265)
-
Step 700
700
#2954CA
oklch(49.1% 0.19 264.9)
-
Step 800
800
#2346A3
oklch(42.8% 0.156 264.8)
-
Step 900
900
#203C81
oklch(37.7% 0.121 264.6)
-
Step 950
950 (this color)
#09183F
oklch(22.4% 0.077 264.8)
#09183F 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) | #001D40 | 0.017 |
| Deuteranopia (no green cones) | #00183E | 0.012 |
| Tritanopia (no blue cones) | #002228 | 0.063 |
| Achromatopsia (no color) | #1B1B1B | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09183F
#09183F
oklch(22.4% 0.077 264.8)
- #251900
#251900
oklch(22.3% 0.046 84.4)
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 #09183F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.044
- Night Blue #040348 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.057
- Dark Indigo #1F0954 ΔE 0.059
- Dark #1B2431 ΔE 0.060
- Dark Navy #000435 ΔE 0.067
- Darkblue #030764 ΔE 0.074
Use #09183F 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.