#01121B
Closest named color: Rich Navy (#001219). oklch(17.1% 0.032 230.7), rgb(1, 18, 27).
Aa
White text reads best on this color (19.02:1).
About this color
#01121B is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.032 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.005 away. White text reads best on it, at 19.02:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 19.02:1 |
Values
| HEX | #01121B |
| RGB | rgb(1, 18, 27) |
| HSL | hsl(201, 93%, 5%) |
| OKLCH | oklch(17.1% 0.032 230.7) |
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 #01121B | 19.02:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #01121B | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #01121B text on white | 19.02:1 | AAA | Lc 105.3 | Preferred for body text |
| #01121B 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A9C6D5
oklch(81% 0.038 230.3)
-
Step 400
400
#79A8C0
oklch(70.7% 0.061 230.9)
-
Step 500
500
#5592B0
oklch(63% 0.078 231.1)
-
Step 600
600
#377C9C
oklch(55.6% 0.085 231.1)
-
Step 700
700
#296985
oklch(49.2% 0.078 230.2)
-
Step 800
800
#24556C
oklch(42.6% 0.065 231.4)
-
Step 900
900
#234658
oklch(37.6% 0.051 232.8)
-
Step 950
950 (this color)
#01121B
oklch(17.1% 0.032 230.7)
#01121B 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) | #0D121B | 0.021 |
| Deuteranopia (no green cones) | #090F1B | 0.017 |
| Tritanopia (no blue cones) | #001415 | 0.017 |
| Achromatopsia (no color) | #101010 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01121B
#01121B
oklch(17.1% 0.032 230.7)
- #1B0B04
#1B0B04
oklch(17.2% 0.032 47.9)
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 #01121B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.005
- Almost Black #070D0D ΔE 0.031
- Rich Black #0D1B2A ΔE 0.048
- Dark Navy Blue #00022E ΔE 0.071
- Dark Navy #000435 ΔE 0.072
- Midnight #03012D ΔE 0.073
- Very Dark Blue #000133 ΔE 0.077
- Navy Blue #001146 ΔE 0.086
Use #01121B 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.