Rich Black #0D1B2A
Rich Black is a very dark, muted blue with hex code #0D1B2A and RGB rgb(13, 27, 42).
Aa
White text reads best on this color (17.39:1).
About this color
#0D1B2A is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.036 and its hue 251°. Its hue sits on the cool side of the wheel. It is the named color Rich Black. White text reads best on it, at 17.39:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Rich Black |
| Black text | 1.20:1 |
| White text | 17.39:1 |
Colors that go with Rich Black
Matches found by rotating Rich Black around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Rich Black
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Rich Black, closest first.
Similar named colors
The eight named colors closest to Rich Black, with their ΔE distance.
- Dark #1B2431 ΔE 0.041
- Jet #212529 ΔE 0.052
- Rich Navy #001219 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.052
- Navy Blue #001146 ΔE 0.068
- Almost Black #070D0D ΔE 0.072
- Dark Navy #000435 ΔE 0.084
- Space Cadet #2B2D42 ΔE 0.089
More about Rich Black
How to make Rich Black
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 1 part blue
- 1 part black
Recipe result: #1A1E1F, a difference of ΔE 0.034 from Rich Black. That is close; add a little more of one paint to match.
Codes for Rich Black in every format
| HEX | #0D1B2A |
| RGB | rgb(13, 27, 42) |
| HSL | hsl(211, 53%, 11%) |
| OKLCH | oklch(21.8% 0.036 251.3) |
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 #0D1B2A | 17.39:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #0D1B2A | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #0D1B2A text on white | 17.39:1 | AAA | Lc 104.2 | Preferred for body text |
| #0D1B2A text on black | 1.20:1 | Fails | Lc 0.0 | Not readable |
Shades and tints of Rich Black
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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ADC3DC
oklch(80.9% 0.043 251.7)
-
Step 400
400
#82A4CA
oklch(70.7% 0.067 251.6)
-
Step 500
500
#628DBC
oklch(63.1% 0.086 251.4)
-
Step 600
600
#4876A8
oklch(55.5% 0.093 251.7)
-
Step 700
700
#396390
oklch(49% 0.087 251.5)
-
Step 800
800
#2F5175
oklch(42.6% 0.072 251.1)
-
Step 900
900
#2A435F
oklch(37.6% 0.057 252.1)
-
Step 950
950 (this color)
#0D1B2A
oklch(21.8% 0.036 251.3)
Rich Black 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) | #151C2B | 0.013 |
| Deuteranopia (no green cones) | #11192A | 0.009 |
| Tritanopia (no blue cones) | #001E20 | 0.031 |
| Achromatopsia (no color) | #1A1A1A | 0.036 |
Use Rich Black 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.