#11182A
Closest named color: Rich Black (#0D1B2A). oklch(21.2% 0.037 267.1), rgb(17, 24, 42).
Aa
White text reads best on this color (17.67:1).
About this color
#11182A is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.037 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.012 away. White text reads best on it, at 17.67:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.67:1 |
Values
| HEX | #11182A |
| RGB | rgb(17, 24, 42) |
| HSL | hsl(223, 42%, 12%) |
| OKLCH | oklch(21.2% 0.037 267.1) |
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 #11182A | 17.67:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #11182A | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #11182A text on white | 17.67:1 | AAA | Lc 104.4 | Preferred for body text |
| #11182A 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B4C0DE
oklch(80.8% 0.044 268.1)
-
Step 400
400
#8DA0CE
oklch(70.8% 0.071 267.1)
-
Step 500
500
#7188C1
oklch(63.2% 0.09 267)
-
Step 600
600
#5971AD
oklch(55.6% 0.098 266.7)
-
Step 700
700
#495E95
oklch(49% 0.092 267.1)
-
Step 800
800
#3C4D79
oklch(42.7% 0.077 267.1)
-
Step 900
900
#334061
oklch(37.6% 0.059 267.1)
-
Step 950
950 (this color)
#11182A
oklch(21.2% 0.037 267.1)
#11182A 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) | #111A2B | 0.007 |
| Deuteranopia (no green cones) | #0F172A | 0.005 |
| Tritanopia (no blue cones) | #071C1F | 0.033 |
| Achromatopsia (no color) | #181818 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11182A
#11182A
oklch(21.2% 0.037 267.1)
- #201703
#201703
oklch(21.1% 0.037 86.1)
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 #11182A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.012
- Dark #1B2431 ΔE 0.047
- Rich Navy #001219 ΔE 0.051
- Oxford Blue #1B263B ΔE 0.057
- Jet #212529 ΔE 0.058
- Navy Blue #001146 ΔE 0.065
- Almost Black #070D0D ΔE 0.069
- Dark Navy #000435 ΔE 0.078
Use #11182A 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.