#06173B
Closest named color: Navy Blue (#001146). oklch(21.6% 0.074 262.4), rgb(6, 23, 59).
Aa
White text reads best on this color (17.59:1).
About this color
#06173B is a very dark, moderately saturated blue. In OKLCH its lightness is 22%, its chroma 0.074 and its hue 262°. 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 17.59:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.19:1 |
| White text | 17.59:1 |
Values
| HEX | #06173B |
| RGB | rgb(6, 23, 59) |
| HSL | hsl(221, 82%, 13%) |
| OKLCH | oklch(21.6% 0.074 262.4) |
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 #06173B | 17.59:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #06173B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #06173B text on white | 17.59:1 | AAA | Lc 104.2 | Preferred for body text |
| #06173B text on black | 1.19:1 | 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
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A2C1FA
oklch(80.9% 0.088 262.4)
-
Step 400
400
#719FF7
oklch(70.8% 0.139 262.4)
-
Step 500
500
#4B84F4
oklch(63.2% 0.178 262.2)
-
Step 600
600
#2F6AE2
oklch(55.6% 0.193 262.3)
-
Step 700
700
#2357C5
oklch(49.1% 0.181 262.7)
-
Step 800
800
#1E489F
oklch(42.7% 0.149 262.5)
-
Step 900
900
#1E3E7E
oklch(37.8% 0.115 262.3)
-
Step 950
950 (this color)
#06173B
oklch(21.6% 0.074 262.4)
#06173B 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) | #011C3C | 0.016 |
| Deuteranopia (no green cones) | #00173A | 0.009 |
| Tritanopia (no blue cones) | #002026 | 0.058 |
| Achromatopsia (no color) | #191919 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #06173B
#06173B
oklch(21.6% 0.074 262.4)
- #241700
#241700
oklch(21.6% 0.045 81.1)
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 #06173B, 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 0.039
- Night Blue #040348 ΔE 0.053
- Dark Navy #000435 ΔE 0.061
- Oxford Blue #1B263B ΔE 0.061
- Dark #1B2431 ΔE 0.062
- Dark Indigo #1F0954 ΔE 0.066
- Rich Navy #001219 ΔE 0.071
Use #06173B 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.