#011121
Closest named color: Rich Navy (#001219). oklch(17.2% 0.042 246.7), rgb(1, 17, 33).
Aa
White text reads best on this color (19.03:1).
About this color
#011121 is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.042 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.019 away. White text reads best on it, at 19.03:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 19.03:1 |
Values
| HEX | #011121 |
| RGB | rgb(1, 17, 33) |
| HSL | hsl(210, 94%, 7%) |
| OKLCH | oklch(17.2% 0.042 246.7) |
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 #011121 | 19.03:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #011121 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #011121 text on white | 19.03:1 | AAA | Lc 105.3 | Preferred for body text |
| #011121 text on black | 1.10:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDBEB
oklch(88.4% 0.028 248.1)
-
Step 300
300
#A7C4DF
oklch(80.8% 0.05 246.5)
-
Step 400
400
#78A6D0
oklch(70.8% 0.079 246.7)
-
Step 500
500
#538FC3
oklch(63.1% 0.101 246.4)
-
Step 600
600
#3578B0
oklch(55.6% 0.111 246.8)
-
Step 700
700
#276597
oklch(49.1% 0.102 246.4)
-
Step 800
800
#22527B
oklch(42.6% 0.086 247.3)
-
Step 900
900
#214463
oklch(37.6% 0.067 247.4)
-
Step 950
950 (this color)
#011121
oklch(17.2% 0.042 246.7)
#011121 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) | #091222 | 0.016 |
| Deuteranopia (no green cones) | #050E21 | 0.012 |
| Tritanopia (no blue cones) | #001517 | 0.030 |
| Achromatopsia (no color) | #101010 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011121
#011121
oklch(17.2% 0.042 246.7)
- #1B0C00
#1B0C00
oklch(17.3% 0.038 66.4)
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 #011121, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.019
- Almost Black #070D0D ΔE 0.042
- Rich Black #0D1B2A ΔE 0.046
- Dark Navy #000435 ΔE 0.058
- Dark Navy Blue #00022E ΔE 0.059
- Midnight #03012D ΔE 0.061
- Very Dark Blue #000133 ΔE 0.065
- Navy Blue #001146 ΔE 0.073
Use #011121 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.