#011723
Closest named color: Rich Navy (#001219). oklch(19.3% 0.038 234), rgb(1, 23, 35).
Aa
White text reads best on this color (18.29:1).
About this color
#011723 is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.038 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.026 away. White text reads best on it, at 18.29:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.14:1 |
| White text | 18.29:1 |
Values
| HEX | #011723 |
| RGB | rgb(1, 23, 35) |
| HSL | hsl(201, 94%, 7%) |
| OKLCH | oklch(19.3% 0.038 234) |
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 #011723 | 18.29:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #011723 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #011723 text on white | 18.29:1 | AAA | Lc 104.8 | Preferred for body text |
| #011723 text on black | 1.14:1 | 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
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DA
oklch(80.9% 0.045 234.7)
-
Step 400
400
#72A9C7
oklch(70.8% 0.073 233)
-
Step 500
500
#4A93B9
oklch(63.2% 0.093 233.6)
-
Step 600
600
#277CA5
oklch(55.5% 0.101 234.2)
-
Step 700
700
#17698E
oklch(49.2% 0.094 233.8)
-
Step 800
800
#185573
oklch(42.6% 0.078 234.7)
-
Step 900
900
#1B475D
oklch(37.8% 0.061 233.4)
-
Step 950
950 (this color)
#011723
oklch(19.3% 0.038 234)
#011723 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) | #111724 | 0.024 |
| Deuteranopia (no green cones) | #0C1323 | 0.021 |
| Tritanopia (no blue cones) | #001A1B | 0.023 |
| Achromatopsia (no color) | #151515 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011723
#011723
oklch(19.3% 0.038 234)
- #220F04
#220F04
oklch(19.4% 0.039 52)
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 #011723, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.026
- Rich Black #0D1B2A ΔE 0.027
- Almost Black #070D0D ΔE 0.051
- Dark #1B2431 ΔE 0.067
- Navy Blue #001146 ΔE 0.073
- Dark Navy #000435 ΔE 0.073
- Jet #212529 ΔE 0.075
- Dark Navy Blue #00022E ΔE 0.078
Use #011723 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.