#13182E
Closest named color: Rich Black (#0D1B2A). oklch(21.7% 0.044 272.6), rgb(19, 24, 46).
Aa
White text reads best on this color (17.53:1).
About this color
#13182E is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.044 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.017 away. White text reads best on it, at 17.53:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.53:1 |
Values
| HEX | #13182E |
| RGB | rgb(19, 24, 46) |
| HSL | hsl(229, 42%, 13%) |
| OKLCH | oklch(21.7% 0.044 272.6) |
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 #13182E | 17.53:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #13182E | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #13182E text on white | 17.53:1 | AAA | Lc 104.3 | Preferred for body text |
| #13182E text on black | 1.19:1 | 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
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D2D8ED
oklch(88.4% 0.03 273.1)
-
Step 300
300
#B5BFE3
oklch(80.9% 0.052 273)
-
Step 400
400
#8F9ED5
oklch(70.8% 0.082 272.4)
-
Step 500
500
#7485CA
oklch(63.2% 0.106 272.5)
-
Step 600
600
#5D6DB7
oklch(55.6% 0.116 272.9)
-
Step 700
700
#4C5B9D
oklch(49.1% 0.107 272.3)
-
Step 800
800
#3F4B7F
oklch(42.8% 0.088 272.4)
-
Step 900
900
#353F66
oklch(37.8% 0.068 271.9)
-
Step 950
950 (this color)
#13182E
oklch(21.7% 0.044 272.6)
#13182E 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) | #101A2F | 0.008 |
| Deuteranopia (no green cones) | #0D182E | 0.009 |
| Tritanopia (no blue cones) | #091D20 | 0.040 |
| Achromatopsia (no color) | #191919 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13182E
#13182E
oklch(21.7% 0.044 272.6)
- #211900
#211900
oklch(21.7% 0.044 92.8)
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 #13182E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.017
- Dark #1B2431 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.053
- Jet #212529 ΔE 0.058
- Rich Navy #001219 ΔE 0.058
- Navy Blue #001146 ΔE 0.060
- Midnight Purple #280137 ΔE 0.074
- Very Dark Purple #2A0134 ΔE 0.076
Use #13182E 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.