#03181D
Closest named color: Rich Navy (#001219). oklch(19.4% 0.03 215), rgb(3, 24, 29).
Aa
White text reads best on this color (18.22:1).
About this color
#03181D is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.025 away. White text reads best on it, at 18.22:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.22:1 |
Values
| HEX | #03181D |
| RGB | rgb(3, 24, 29) |
| HSL | hsl(192, 81%, 6%) |
| OKLCH | oklch(19.4% 0.03 215) |
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 #03181D | 18.22:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #03181D | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #03181D text on white | 18.22:1 | AAA | Lc 104.8 | Preferred for body text |
| #03181D 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CBDDE1
oklch(88.5% 0.02 212.6)
-
Step 300
300
#A8C7CF
oklch(80.9% 0.035 215.1)
-
Step 400
400
#78AAB7
oklch(70.7% 0.056 215.7)
-
Step 500
500
#5295A5
oklch(63.2% 0.072 215)
-
Step 600
600
#337F90
oklch(55.7% 0.078 215)
-
Step 700
700
#246B7A
oklch(49.1% 0.073 214.5)
-
Step 800
800
#205764
oklch(42.6% 0.061 216.1)
-
Step 900
900
#214851
oklch(37.7% 0.047 214.8)
-
Step 950
950 (this color)
#03181D
oklch(19.4% 0.03 215)
#03181D 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) | #14171D | 0.025 |
| Deuteranopia (no green cones) | #11141D | 0.025 |
| Tritanopia (no blue cones) | #001A1A | 0.012 |
| Achromatopsia (no color) | #151515 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03181D
#03181D
oklch(19.4% 0.03 215)
- #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 #03181D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.025
- Rich Black #0D1B2A ΔE 0.032
- Almost Black #070D0D ΔE 0.046
- Dark #1B2431 ΔE 0.067
- Jet #212529 ΔE 0.072
- Oxford Blue #1B263B ΔE 0.081
- Dark Navy #000435 ΔE 0.086
- Navy Blue #001146 ΔE 0.087
Use #03181D 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.