#011824
Closest named color: Rich Black (#0D1B2A). oklch(19.7% 0.039 233.2), rgb(1, 24, 36).
Aa
White text reads best on this color (18.14:1).
About this color
#011824 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.039 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.024 away. White text reads best on it, at 18.14:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.14:1 |
Values
| HEX | #011824 |
| RGB | rgb(1, 24, 36) |
| HSL | hsl(201, 95%, 7%) |
| OKLCH | oklch(19.7% 0.039 233.2) |
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 #011824 | 18.14:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #011824 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #011824 text on white | 18.14:1 | AAA | Lc 104.7 | Preferred for body text |
| #011824 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300
#A4C6DA
oklch(80.8% 0.046 233.9)
-
Step 400
400
#71A9C7
oklch(70.7% 0.073 232.6)
-
Step 500
500
#4793B9
oklch(63.1% 0.094 232.7)
-
Step 600
600
#237DA5
oklch(55.7% 0.102 232.6)
-
Step 700
700
#13698E
oklch(49.1% 0.095 233.2)
-
Step 800
800
#155673
oklch(42.8% 0.079 232.7)
-
Step 900
900
#1A475D
oklch(37.7% 0.061 233)
-
Step 950
950 (this color)
#011824
oklch(19.7% 0.039 233.2)
#011824 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) | #121825 | 0.025 |
| Deuteranopia (no green cones) | #0D1424 | 0.021 |
| Tritanopia (no blue cones) | #001B1C | 0.023 |
| Achromatopsia (no color) | #161616 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011824
#011824
oklch(19.7% 0.039 233.2)
- #231004
#231004
oklch(19.8% 0.039 53.7)
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 #011824, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.024
- Rich Navy #001219 ΔE 0.030
- Almost Black #070D0D ΔE 0.055
- Dark #1B2431 ΔE 0.063
- Jet #212529 ΔE 0.072
- Navy Blue #001146 ΔE 0.072
- Oxford Blue #1B263B ΔE 0.075
- Dark Navy #000435 ΔE 0.075
Use #011824 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.