#011C18
Closest named color: Rich Navy (#001219). oklch(20.4% 0.035 181.8), rgb(1, 28, 24).
Aa
White text reads best on this color (17.78:1).
About this color
#011C18 is a very dark, muted teal or cyan. In OKLCH its lightness is 20%, its chroma 0.035 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.042 away. White text reads best on it, at 17.78:1.
| Hue family | Teals and cyans |
| Lightness | very dark (20%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.18:1 |
| White text | 17.78:1 |
Values
| HEX | #011C18 |
| RGB | rgb(1, 28, 24) |
| HSL | hsl(171, 93%, 6%) |
| OKLCH | oklch(20.4% 0.035 181.8) |
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 #011C18 | 17.78:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #011C18 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #011C18 text on white | 17.78:1 | AAA | Lc 104.4 | Preferred for body text |
| #011C18 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#C9DEDA
oklch(88.4% 0.023 183.1)
-
Step 300
300
#A4CAC2
oklch(80.9% 0.042 181)
-
Step 400
400
#70AFA3
oklch(70.8% 0.067 180.9)
-
Step 500
500
#459A8D
oklch(63% 0.085 182.1)
-
Step 600
600
#1C8577
oklch(55.7% 0.093 181.5)
-
Step 700
700
#087064
oklch(49% 0.086 181.9)
-
Step 800
800
#105C52
oklch(42.9% 0.072 181.6)
-
Step 900
900
#184B44
oklch(37.7% 0.055 182.7)
-
Step 950
950 (this color)
#011C18
oklch(20.4% 0.035 181.8)
#011C18 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) | #1A1A18 | 0.037 |
| Deuteranopia (no green cones) | #161718 | 0.034 |
| Tritanopia (no blue cones) | #001D1B | 0.006 |
| Achromatopsia (no color) | #181818 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011C18
#011C18
oklch(20.4% 0.035 181.8)
- #241016
#241016
oklch(20.5% 0.035 1.4)
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 #011C18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.043
- Almost Black #070D0D ΔE 0.057
- Dark #1B2431 ΔE 0.067
- Jet #212529 ΔE 0.067
- Dark Forest Green #002D04 ΔE 0.080
- Oxford Blue #1B263B ΔE 0.083
- Very Dark Green #062E03 ΔE 0.085
Use #011C18 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.