#1C180E
Closest named color: Rich Black (#0D1B2A). oklch(21% 0.019 88.7), rgb(28, 24, 14).
Aa
White text reads best on this color (17.70:1).
About this color
#1C180E is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.055 away. White text reads best on it, at 17.70:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.70:1 |
Values
| HEX | #1C180E |
| RGB | rgb(28, 24, 14) |
| HSL | hsl(43, 33%, 8%) |
| OKLCH | oklch(21% 0.019 88.7) |
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 #1C180E | 17.70:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #1C180E | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #1C180E text on white | 17.70:1 | AAA | Lc 104.5 | Preferred for body text |
| #1C180E text on black | 1.18:1 | 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EBEAE5
oklch(93.6% 0.007 97.4)
-
Step 200
200
#DCD9D0
oklch(88.5% 0.013 91.5)
-
Step 300
300
#C7C0B0
oklch(80.9% 0.023 87.2)
-
Step 400
400
#AAA087
oklch(70.7% 0.037 88.8)
-
Step 500
500
#958869
oklch(63% 0.047 87.9)
-
Step 600
600
#7F7251
oklch(55.5% 0.05 89)
-
Step 700
700
#6C6041
oklch(49.2% 0.048 89.3)
-
Step 800
800
#584E36
oklch(42.7% 0.039 88)
-
Step 900
900
#48412F
oklch(37.7% 0.03 89.3)
-
Step 950
950 (this color)
#1C180E
oklch(21% 0.019 88.7)
#1C180E 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) | #1A180D | 0.005 |
| Deuteranopia (no green cones) | #1B190E | 0.004 |
| Tritanopia (no blue cones) | #1E1615 | 0.018 |
| Achromatopsia (no color) | #181818 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C180E
#1C180E
oklch(21% 0.019 88.7)
- #151822
#151822
oklch(21.1% 0.02 271.6)
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 #1C180E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.055
- Dark Brown #341C02 ΔE 0.057
- Jet #212529 ΔE 0.059
- Rich Navy #001219 ΔE 0.063
- Almost Black #070D0D ΔE 0.063
- Dark #1B2431 ΔE 0.067
- Very Dark Brown #1D0200 ΔE 0.075
- Chocolate Brown #411900 ΔE 0.083
Use #1C180E 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.