#12153D
Closest named color: Navy Blue (#001146). oklch(22.1% 0.076 275.1), rgb(18, 21, 61).
Aa
White text reads best on this color (17.49:1).
About this color
#12153D is a very dark, moderately saturated blue. In OKLCH its lightness is 22%, its chroma 0.076 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 17.49:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.20:1 |
| White text | 17.49:1 |
Values
| HEX | #12153D |
| RGB | rgb(18, 21, 61) |
| HSL | hsl(236, 54%, 15%) |
| OKLCH | oklch(22.1% 0.076 275.1) |
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 #12153D | 17.49:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #12153D | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #12153D text on white | 17.49:1 | AAA | Lc 104.1 | Preferred for body text |
| #12153D 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
#CFD7FB
oklch(88.5% 0.05 275.4)
-
Step 300
300
#AFBCFB
oklch(80.8% 0.09 275.2)
-
Step 400
400
#8797F9
oklch(70.6% 0.144 275.1)
-
Step 500
500
#6C7AF6
oklch(63.1% 0.184 275)
-
Step 600
600
#575FE5
oklch(55.6% 0.2 275.2)
-
Step 700
700
#484DC7
oklch(49.1% 0.186 275.4)
-
Step 800
800
#3A40A1
oklch(42.6% 0.154 275)
-
Step 900
900
#31387F
oklch(37.7% 0.119 274.9)
-
Step 950
950 (this color)
#12153D
oklch(22.1% 0.076 275.1)
#12153D 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) | #001B3E | 0.026 |
| Deuteranopia (no green cones) | #00183C | 0.024 |
| Tritanopia (no blue cones) | #001F26 | 0.065 |
| Achromatopsia (no color) | #191919 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12153D
#12153D
oklch(22.1% 0.076 275.1)
- #211A00
#211A00
oklch(22% 0.045 95.3)
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 #12153D, 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 0.046
- Dark Indigo #1F0954 ΔE 0.053
- Night Blue #040348 ΔE 0.055
- Oxford Blue #1B263B ΔE 0.060
- Dark #1B2431 ΔE 0.062
- Midnight Purple #280137 ΔE 0.065
- Dark Navy #000435 ΔE 0.066
Use #12153D 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.