#040F22
Closest named color: Rich Navy (#001219). oklch(17% 0.044 258.5), rgb(4, 15, 34).
Aa
White text reads best on this color (19.15:1).
About this color
#040F22 is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.044 and its hue 258°. 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 19.15:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.09:1 |
| White text | 19.15:1 |
Values
| HEX | #040F22 |
| RGB | rgb(4, 15, 34) |
| HSL | hsl(218, 79%, 7%) |
| OKLCH | oklch(17% 0.044 258.5) |
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 #040F22 | 19.15:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #040F22 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #040F22 text on white | 19.15:1 | AAA | Lc 105.4 | Preferred for body text |
| #040F22 text on black | 1.09:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#ADC2E3
oklch(80.9% 0.052 259.4)
-
Step 400
400
#81A2D4
oklch(70.7% 0.082 258.5)
-
Step 500
500
#618AC9
oklch(63% 0.106 258.7)
-
Step 600
600
#4773B6
oklch(55.5% 0.116 258.6)
-
Step 700
700
#39609D
oklch(49% 0.108 259)
-
Step 800
800
#2F4F7F
oklch(42.7% 0.089 258.3)
-
Step 900
900
#2A4266
oklch(37.7% 0.069 258.3)
-
Step 950
950 (this color)
#040F22
oklch(17% 0.044 258.5)
#040F22 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) | #061123 | 0.009 |
| Deuteranopia (no green cones) | #030E22 | 0.005 |
| Tritanopia (no blue cones) | #001316 | 0.034 |
| Achromatopsia (no color) | #0F0F0F | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040F22
#040F22
oklch(17% 0.044 258.5)
- #180D00
#180D00
oklch(17% 0.036 77)
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 #040F22, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.026
- Almost Black #070D0D ΔE 0.044
- Rich Black #0D1B2A ΔE 0.049
- Dark Navy #000435 ΔE 0.053
- Dark Navy Blue #00022E ΔE 0.054
- Midnight #03012D ΔE 0.054
- Very Dark Blue #000133 ΔE 0.059
- Navy Blue #001146 ΔE 0.071
Use #040F22 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.