#15193F
Closest named color: Navy Blue (#001146). oklch(23.4% 0.072 274.9), rgb(21, 25, 63).
Aa
White text reads best on this color (16.89:1).
About this color
#15193F is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.072 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.043 away. White text reads best on it, at 16.89:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.24:1 |
| White text | 16.89:1 |
Values
| HEX | #15193F |
| RGB | rgb(21, 25, 63) |
| HSL | hsl(234, 50%, 16%) |
| OKLCH | oklch(23.4% 0.072 274.9) |
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 #15193F | 16.89:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #15193F | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #15193F text on white | 16.89:1 | AAA | Lc 103.7 | Preferred for body text |
| #15193F text on black | 1.24:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD7F9
oklch(88.4% 0.048 274.9)
-
Step 300
300
#B0BDF8
oklch(80.9% 0.085 274.7)
-
Step 400
400
#8898F5
oklch(70.7% 0.137 275)
-
Step 500
500
#6D7CF0
oklch(63.1% 0.173 274.8)
-
Step 600
600
#5761DF
oklch(55.5% 0.189 275)
-
Step 700
700
#4850C2
oklch(49.2% 0.176 274.9)
-
Step 800
800
#3B429D
oklch(42.8% 0.146 275.1)
-
Step 900
900
#32397C
oklch(37.7% 0.112 275.1)
-
Step 950
950 (this color)
#15193F
oklch(23.4% 0.072 274.9)
#15193F 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) | #041F40 | 0.025 |
| Deuteranopia (no green cones) | #001B3E | 0.027 |
| Tritanopia (no blue cones) | #002229 | 0.063 |
| Achromatopsia (no color) | #1D1D1D | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15193F
#15193F
oklch(23.4% 0.072 274.9)
- #251D00
#251D00
oklch(23.3% 0.048 94.4)
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 #15193F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.043
- Rich Black #0D1B2A ΔE 0.045
- Oxford Blue #1B263B ΔE 0.047
- Dark #1B2431 ΔE 0.052
- Dark Indigo #1F0954 ΔE 0.053
- Night Blue #040348 ΔE 0.066
- Midnight Purple #280137 ΔE 0.069
- Jet #212529 ΔE 0.069
Use #15193F 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.