#2B3D46
Closest named color: Onyx (#343A40). oklch(34.8% 0.028 230.2), rgb(43, 61, 70).
Aa
White text reads best on this color (11.29:1).
About this color
#2B3D46 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.016 away. White text reads best on it, at 11.29:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.85:1 |
| White text | 11.29:1 |
Values
| HEX | #2B3D46 |
| RGB | rgb(43, 61, 70) |
| HSL | hsl(200, 24%, 22%) |
| OKLCH | oklch(34.8% 0.028 230.2) |
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 #2B3D46 | 11.29:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #2B3D46 | 1.85:1 | Fails | Lc 7.8 | Not readable |
| #2B3D46 text on white | 11.29:1 | AAA | Lc 96.1 | Preferred for body text |
| #2B3D46 text on black | 1.85:1 | 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 900.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B4C3CC
oklch(80.8% 0.021 233.9)
-
Step 400
400
#8CA5B2
oklch(70.7% 0.034 230.5)
-
Step 500
500
#6F8F9F
oklch(63.1% 0.043 229.9)
-
Step 600
600
#57798A
oklch(55.7% 0.047 230.3)
-
Step 700
700
#476675
oklch(49.2% 0.043 229.6)
-
Step 800
800
#3A535F
oklch(42.7% 0.036 229.3)
-
Step 900
900 (this color)
#2B3D46
oklch(34.8% 0.028 230.2)
-
Step 950
950
#1E282E
oklch(27% 0.018 234.7)
#2B3D46 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) | #393C46 | 0.021 |
| Deuteranopia (no green cones) | #353946 | 0.019 |
| Tritanopia (no blue cones) | #224040 | 0.020 |
| Achromatopsia (no color) | #3A3A3A | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B3D46
#2B3D46
oklch(34.8% 0.028 230.2)
- #46362D
#46362D
oklch(34.8% 0.028 50.8)
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 #2B3D46, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.016
- Dark Blue Grey #1F3B4D ΔE 0.022
- Charcoal Grey #3C4142 ΔE 0.031
- Charcoal #264653 ΔE 0.031
- Gunmetal #293241 ΔE 0.036
- Midnight Green #073B4C ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.049
Use #2B3D46 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.