#2C3D45
Closest named color: Onyx (#343A40). oklch(34.9% 0.026 228.5), rgb(44, 61, 69).
Aa
White text reads best on this color (11.28:1).
About this color
#2C3D45 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.015 away. White text reads best on it, at 11.28:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.86:1 |
| White text | 11.28:1 |
Values
| HEX | #2C3D45 |
| RGB | rgb(44, 61, 69) |
| HSL | hsl(199, 22%, 22%) |
| OKLCH | oklch(34.9% 0.026 228.5) |
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 #2C3D45 | 11.28:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #2C3D45 | 1.86:1 | Fails | Lc 7.8 | Not readable |
| #2C3D45 text on white | 11.28:1 | AAA | Lc 96.0 | Preferred for body text |
| #2C3D45 text on black | 1.86:1 | 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
#B4C3CB
oklch(80.8% 0.02 230.8)
-
Step 400
400
#8DA5B0
oklch(70.7% 0.031 227.2)
-
Step 500
500
#718F9D
oklch(63.2% 0.04 228)
-
Step 600
600
#597988
oklch(55.7% 0.043 228.5)
-
Step 700
700
#496573
oklch(49% 0.04 230.2)
-
Step 800
800
#3C535E
oklch(42.8% 0.033 229)
-
Step 900
900 (this color)
#2C3D45
oklch(34.9% 0.026 228.5)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#2C3D45 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) | #393C45 | 0.020 |
| Deuteranopia (no green cones) | #353945 | 0.018 |
| Tritanopia (no blue cones) | #243F3F | 0.018 |
| Achromatopsia (no color) | #3B3B3B | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C3D45
#2C3D45
oklch(34.9% 0.026 228.5)
- #46362E
#46362E
oklch(34.8% 0.027 47.9)
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 #2C3D45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.015
- Dark Blue Grey #1F3B4D ΔE 0.024
- Charcoal Grey #3C4142 ΔE 0.030
- Charcoal #264653 ΔE 0.032
- Gunmetal #293241 ΔE 0.037
- Midnight Green #073B4C ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.051
Use #2C3D45 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.