#041B2B
Closest named color: Rich Black (#0D1B2A). oklch(21.3% 0.043 241.9), rgb(4, 27, 43).
Aa
White text reads best on this color (17.54:1).
About this color
#041B2B is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.043 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.011 away. White text reads best on it, at 17.54:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.54:1 |
Values
| HEX | #041B2B |
| RGB | rgb(4, 27, 43) |
| HSL | hsl(205, 83%, 9%) |
| OKLCH | oklch(21.3% 0.043 241.9) |
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 #041B2B | 17.54:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #041B2B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #041B2B text on white | 17.54:1 | AAA | Lc 104.2 | Preferred for body text |
| #041B2B text on black | 1.19:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A4C5DF
oklch(80.8% 0.051 242)
-
Step 400
400
#72A7CF
oklch(70.7% 0.081 241.9)
-
Step 500
500
#4991C3
oklch(63.2% 0.104 241.4)
-
Step 600
600
#277AB0
oklch(55.6% 0.114 242.1)
-
Step 700
700
#186797
oklch(49.2% 0.105 241.5)
-
Step 800
800
#18547A
oklch(42.7% 0.087 241.4)
-
Step 900
900
#1B4562
oklch(37.5% 0.068 242)
-
Step 950
950 (this color)
#041B2B
oklch(21.3% 0.043 241.9)
#041B2B 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) | #141B2C | 0.022 |
| Deuteranopia (no green cones) | #0E182B | 0.015 |
| Tritanopia (no blue cones) | #001F21 | 0.029 |
| Achromatopsia (no color) | #191919 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #041B2B
#041B2B
oklch(21.3% 0.043 241.9)
- #271403
#271403
oklch(21.4% 0.043 61.9)
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 #041B2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.011
- Rich Navy #001219 ΔE 0.047
- Dark #1B2431 ΔE 0.048
- Oxford Blue #1B263B ΔE 0.058
- Jet #212529 ΔE 0.060
- Navy Blue #001146 ΔE 0.064
- Almost Black #070D0D ΔE 0.071
- Dark Navy #000435 ΔE 0.079
Use #041B2B 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.