#0C173B
Closest named color: Navy Blue (#001146). oklch(22% 0.071 267.4), rgb(12, 23, 59).
Aa
White text reads best on this color (17.48:1).
About this color
#0C173B is a very dark, moderately saturated blue. In OKLCH its lightness is 22%, its chroma 0.071 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.033 away. White text reads best on it, at 17.48:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.20:1 |
| White text | 17.48:1 |
Values
| HEX | #0C173B |
| RGB | rgb(12, 23, 59) |
| HSL | hsl(226, 66%, 14%) |
| OKLCH | oklch(22% 0.071 267.4) |
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 #0C173B | 17.48:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #0C173B | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #0C173B text on white | 17.48:1 | AAA | Lc 104.1 | Preferred for body text |
| #0C173B text on black | 1.20:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300
#A9BFF8
oklch(80.8% 0.085 268.1)
-
Step 400
400
#7B9CF5
oklch(70.6% 0.136 267.5)
-
Step 500
500
#5C81F1
oklch(63.2% 0.173 267.5)
-
Step 600
600
#4367DF
oklch(55.5% 0.187 267.4)
-
Step 700
700
#3655C2
oklch(49.2% 0.174 267.5)
-
Step 800
800
#2C469D
oklch(42.7% 0.145 267.3)
-
Step 900
900
#273C7D
oklch(37.7% 0.113 267.3)
-
Step 950
950 (this color)
#0C173B
oklch(22% 0.071 267.4)
#0C173B 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) | #021C3C | 0.018 |
| Deuteranopia (no green cones) | #00183A | 0.015 |
| Tritanopia (no blue cones) | #002026 | 0.059 |
| Achromatopsia (no color) | #1A1A1A | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C173B
#0C173B
oklch(22% 0.071 267.4)
- #231900
#231900
oklch(22% 0.045 88.5)
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 #0C173B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.033
- Rich Black #0D1B2A ΔE 0.038
- Night Blue #040348 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.058
- Dark #1B2431 ΔE 0.058
- Dark Indigo #1F0954 ΔE 0.062
- Dark Navy #000435 ΔE 0.065
- Rich Navy #001219 ΔE 0.074
Use #0C173B 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.