#151644
Closest named color: Navy Blue (#001146). oklch(23.2% 0.085 276.6), rgb(21, 22, 68).
Aa
White text reads best on this color (17.07:1).
About this color
#151644 is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.085 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.036 away. White text reads best on it, at 17.07:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.23:1 |
| White text | 17.07:1 |
Values
| HEX | #151644 |
| RGB | rgb(21, 22, 68) |
| HSL | hsl(239, 53%, 17%) |
| OKLCH | oklch(23.2% 0.085 276.6) |
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 #151644 | 17.07:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #151644 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #151644 text on white | 17.07:1 | AAA | Lc 103.7 | Preferred for body text |
| #151644 text on black | 1.23:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD7FF
oklch(88.6% 0.056 276.3)
-
Step 300
300
#B0BBFF
oklch(80.8% 0.097 276.9)
-
Step 400
400
#8995FF
oklch(70.7% 0.154 276.8)
-
Step 500
500
#6E76FF
oklch(63.1% 0.2 276.5)
-
Step 600
600
#5958F1
oklch(55.5% 0.223 276.6)
-
Step 700
700
#4A47D2
oklch(49.2% 0.207 276.6)
-
Step 800
800
#3C3BAA
oklch(42.7% 0.172 276.6)
-
Step 900
900
#323586
oklch(37.7% 0.133 276.4)
-
Step 950
950 (this color)
#151644
oklch(23.2% 0.085 276.6)
#151644 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) | #001E46 | 0.031 |
| Deuteranopia (no green cones) | #001A43 | 0.028 |
| Tritanopia (no blue cones) | #00212A | 0.071 |
| Achromatopsia (no color) | #1C1C1C | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151644
#151644
oklch(23.2% 0.085 276.6)
- #241D00
#241D00
oklch(23.2% 0.048 96.3)
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 #151644, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.036
- Dark Indigo #1F0954 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.057
- Night Blue #040348 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.058
- Dark #1B2431 ΔE 0.064
- Midnight Purple #280137 ΔE 0.066
- Darkblue #030764 ΔE 0.070
Use #151644 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.