#12153E
Closest named color: Navy Blue (#001146). oklch(22.2% 0.077 275), rgb(18, 21, 62).
Aa
White text reads best on this color (17.46:1).
About this color
#12153E is a very dark, moderately saturated blue. In OKLCH its lightness is 22%, its chroma 0.077 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.034 away. White text reads best on it, at 17.46:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.20:1 |
| White text | 17.46:1 |
Values
| HEX | #12153E |
| RGB | rgb(18, 21, 62) |
| HSL | hsl(236, 55%, 16%) |
| OKLCH | oklch(22.2% 0.077 275) |
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 #12153E | 17.46:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #12153E | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #12153E text on white | 17.46:1 | AAA | Lc 104.1 | Preferred for body text |
| #12153E 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CFD7FC
oklch(88.5% 0.052 275.7)
-
Step 300
300
#AFBCFC
oklch(80.8% 0.092 275.3)
-
Step 400
400
#8797FB
oklch(70.7% 0.147 275.1)
-
Step 500
500
#6C79F8
oklch(63% 0.188 275.3)
-
Step 600
600
#565EE7
oklch(55.5% 0.204 275)
-
Step 700
700
#474DC9
oklch(49.2% 0.189 274.9)
-
Step 800
800
#3A40A2
oklch(42.7% 0.156 275)
-
Step 900
900
#313881
oklch(37.8% 0.122 274.9)
-
Step 950
950 (this color)
#12153E
oklch(22.2% 0.077 275)
#12153E 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) | #001C3F | 0.028 |
| Deuteranopia (no green cones) | #00183D | 0.024 |
| Tritanopia (no blue cones) | #001F27 | 0.065 |
| Achromatopsia (no color) | #1A1A1A | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12153E
#12153E
oklch(22.2% 0.077 275)
- #221A00
#221A00
oklch(22.1% 0.045 93.2)
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 #12153E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.034
- Rich Black #0D1B2A ΔE 0.047
- Dark Indigo #1F0954 ΔE 0.051
- Night Blue #040348 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.060
- Dark #1B2431 ΔE 0.063
- Midnight Purple #280137 ΔE 0.065
- Dark Navy #000435 ΔE 0.067
Use #12153E 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.