#04181E
Closest named color: Rich Navy (#001219). oklch(19.5% 0.029 219.7), rgb(4, 24, 30).
Aa
White text reads best on this color (18.18:1).
About this color
#04181E is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.026 away. White text reads best on it, at 18.18:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.18:1 |
Values
| HEX | #04181E |
| RGB | rgb(4, 24, 30) |
| HSL | hsl(194, 76%, 7%) |
| OKLCH | oklch(19.5% 0.029 219.7) |
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 #04181E | 18.18:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #04181E | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #04181E text on white | 18.18:1 | AAA | Lc 104.8 | Preferred for body text |
| #04181E text on black | 1.15:1 | 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
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CCDCE2
oklch(88.4% 0.019 222.2)
-
Step 300
300
#A9C6D0
oklch(80.8% 0.034 220.6)
-
Step 400
400
#7AA9B8
oklch(70.7% 0.055 219.6)
-
Step 500
500
#5594A7
oklch(63.2% 0.071 219.4)
-
Step 600
600
#377E92
oklch(55.6% 0.077 219.2)
-
Step 700
700
#296A7D
oklch(49.1% 0.072 220.4)
-
Step 800
800
#235765
oklch(42.8% 0.059 218.3)
-
Step 900
900
#224752
oklch(37.5% 0.046 219.6)
-
Step 950
950 (this color)
#04181E
oklch(19.5% 0.029 219.7)
#04181E 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) | #14171E | 0.024 |
| Deuteranopia (no green cones) | #10141E | 0.022 |
| Tritanopia (no blue cones) | #001A1A | 0.014 |
| Achromatopsia (no color) | #151515 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04181E
#04181E
oklch(19.5% 0.029 219.7)
- #20100B
#20100B
oklch(19.4% 0.029 38.1)
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 #04181E, 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 0.029
- Almost Black #070D0D ΔE 0.048
- Dark #1B2431 ΔE 0.065
- Jet #212529 ΔE 0.070
- Oxford Blue #1B263B ΔE 0.079
- Navy Blue #001146 ΔE 0.085
- Dark Navy #000435 ΔE 0.085
Use #04181E 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.