#1B131A
Closest named color: Rich Black (#0D1B2A). oklch(20% 0.019 330.5), rgb(27, 19, 26).
Aa
White text reads best on this color (18.18:1).
About this color
#1B131A is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.041 away. White text reads best on it, at 18.18:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.18:1 |
Values
| HEX | #1B131A |
| RGB | rgb(27, 19, 26) |
| HSL | hsl(308, 17%, 9%) |
| OKLCH | oklch(20% 0.019 330.5) |
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 #1B131A | 18.18:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #1B131A | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #1B131A text on white | 18.18:1 | AAA | Lc 104.9 | Preferred for body text |
| #1B131A text on black | 1.15:1 | 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
#F7F5F6
oklch(97.2% 0.002 345.2)
-
Step 100
100
#ECE8EC
oklch(93.5% 0.007 325.6)
-
Step 200
200
#DED6DD
oklch(88.4% 0.013 329.6)
-
Step 300
300
#C9BCC7
oklch(80.9% 0.021 330.7)
-
Step 400
400
#AE99AB
oklch(70.7% 0.035 330.6)
-
Step 500
500
#9A8096
oklch(63.1% 0.045 331.3)
-
Step 600
600
#846981
oklch(55.5% 0.049 329.9)
-
Step 700
700
#70586D
oklch(49.2% 0.045 330.4)
-
Step 800
800
#5B4859
oklch(42.8% 0.037 329.7)
-
Step 900
900
#4B3C49
oklch(37.7% 0.03 330.6)
-
Step 950
950 (this color)
#1B131A
oklch(20% 0.019 330.5)
#1B131A 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) | #13151A | 0.017 |
| Deuteranopia (no green cones) | #15161A | 0.016 |
| Tritanopia (no blue cones) | #1C1315 | 0.010 |
| Achromatopsia (no color) | #151515 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B131A
#1B131A
oklch(20% 0.019 330.5)
- #101812
#101812
oklch(19.9% 0.017 152.3)
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 #1B131A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.041
- Rich Navy #001219 ΔE 0.051
- Almost Black #070D0D ΔE 0.054
- Dark #1B2431 ΔE 0.065
- Jet #212529 ΔE 0.065
- Very Dark Brown #1D0200 ΔE 0.069
- Dark Brown #341C02 ΔE 0.079
- Oxford Blue #1B263B ΔE 0.080
Use #1B131A 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.