#12142B
Closest named color: Rich Black (#0D1B2A). oklch(20.3% 0.046 277.8), rgb(18, 20, 43).
Aa
White text reads best on this color (18.09:1).
About this color
#12142B is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.046 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.026 away. White text reads best on it, at 18.09:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.09:1 |
Values
| HEX | #12142B |
| RGB | rgb(18, 20, 43) |
| HSL | hsl(235, 41%, 12%) |
| OKLCH | oklch(20.3% 0.046 277.8) |
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 #12142B | 18.09:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #12142B | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #12142B text on white | 18.09:1 | AAA | Lc 104.8 | Preferred for body text |
| #12142B text on black | 1.16:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D8ED
oklch(88.6% 0.029 277.2)
-
Step 300
300
#B8BEE4
oklch(80.9% 0.054 278.1)
-
Step 400
400
#939CD6
oklch(70.7% 0.085 277.2)
-
Step 500
500
#7A82CB
oklch(63.1% 0.11 278)
-
Step 600
600
#636BB8
oklch(55.7% 0.119 277.3)
-
Step 700
700
#52589F
oklch(49% 0.113 277.7)
-
Step 800
800
#434981
oklch(42.8% 0.092 277.1)
-
Step 900
900
#393D67
oklch(37.7% 0.072 278.2)
-
Step 950
950 (this color)
#12142B
oklch(20.3% 0.046 277.8)
#12142B 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) | #0B172C | 0.014 |
| Deuteranopia (no green cones) | #09152A | 0.014 |
| Tritanopia (no blue cones) | #09191D | 0.040 |
| Achromatopsia (no color) | #161616 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12142B
#12142B
oklch(20.3% 0.046 277.8)
- #1C1700
#1C1700
oklch(20.4% 0.042 98.7)
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 #12142B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.026
- Rich Navy #001219 ΔE 0.051
- Dark #1B2431 ΔE 0.059
- Navy Blue #001146 ΔE 0.060
- Oxford Blue #1B263B ΔE 0.067
- Almost Black #070D0D ΔE 0.068
- Dark Navy #000435 ΔE 0.068
- Midnight Purple #280137 ΔE 0.070
Use #12142B 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.