#041831
Closest named color: Rich Black (#0D1B2A). oklch(20.9% 0.056 254.7), rgb(4, 24, 49).
Aa
White text reads best on this color (17.79:1).
About this color
#041831 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.056 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.023 away. White text reads best on it, at 17.79:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.79:1 |
Values
| HEX | #041831 |
| RGB | rgb(4, 24, 49) |
| HSL | hsl(213, 85%, 10%) |
| OKLCH | oklch(20.9% 0.056 254.7) |
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 #041831 | 17.79:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #041831 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #041831 text on white | 17.79:1 | AAA | Lc 104.4 | Preferred for body text |
| #041831 text on black | 1.18:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A4C3EC
oklch(80.9% 0.067 255.5)
-
Step 400
400
#72A3E2
oklch(70.6% 0.107 255.1)
-
Step 500
500
#4B8BDA
oklch(63.1% 0.137 254.8)
-
Step 600
600
#2B73C7
oklch(55.5% 0.148 254.7)
-
Step 700
700
#1D60AC
oklch(49% 0.138 254.7)
-
Step 800
800
#1B4F8C
oklch(42.7% 0.115 254.8)
-
Step 900
900
#1D4270
oklch(37.7% 0.09 255.2)
-
Step 950
950 (this color)
#041831
oklch(20.9% 0.056 254.7)
#041831 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) | #0B1A32 | 0.012 |
| Deuteranopia (no green cones) | #041631 | 0.007 |
| Tritanopia (no blue cones) | #001E22 | 0.042 |
| Achromatopsia (no color) | #181818 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #041831
#041831
oklch(20.9% 0.056 254.7)
- #241400
#241400
oklch(20.8% 0.044 72.7)
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 #041831, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.023
- Navy Blue #001146 ΔE 0.047
- Rich Navy #001219 ΔE 0.052
- Dark #1B2431 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.062
- Dark Navy #000435 ΔE 0.064
- Night Blue #040348 ΔE 0.068
- Jet #212529 ΔE 0.071
Use #041831 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.