#45373B
Closest named color: Onyx (#343A40). oklch(35.3% 0.021 359.2), rgb(69, 55, 59).
Aa
White text reads best on this color (11.27:1).
About this color
#45373B is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.030 away. White text reads best on it, at 11.27:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.86:1 |
| White text | 11.27:1 |
Values
| HEX | #45373B |
| RGB | rgb(69, 55, 59) |
| HSL | hsl(343, 11%, 24%) |
| OKLCH | oklch(35.3% 0.021 359.2) |
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 #45373B | 11.27:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #45373B | 1.86:1 | Fails | Lc 7.9 | Not readable |
| #45373B text on white | 11.27:1 | AAA | Lc 96.0 | Preferred for body text |
| #45373B 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EDE9EA
oklch(93.7% 0.005 0)
-
Step 200
200
#DED7D9
oklch(88.5% 0.008 357.8)
-
Step 300
300
#CABDC0
oklch(81% 0.015 1.6)
-
Step 400
400
#AF9AA0
oklch(70.6% 0.026 358.6)
-
Step 500
500
#9B8289
oklch(63.2% 0.032 359.3)
-
Step 600
600
#856B73
oklch(55.6% 0.035 357.9)
-
Step 700
700
#715960
oklch(49.1% 0.033 359.1)
-
Step 800
800
#5C494E
oklch(42.7% 0.027 0.7)
-
Step 900
900 (this color)
#45373B
oklch(35.3% 0.021 359.2)
-
Step 950
950
#2C2426
oklch(27% 0.013 1.1)
#45373B 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) | #39393B | 0.022 |
| Deuteranopia (no green cones) | #3C3B3B | 0.020 |
| Tritanopia (no blue cones) | #483638 | 0.007 |
| Achromatopsia (no color) | #3B3B3B | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45373B
#45373B
oklch(35.3% 0.021 359.2)
- #303F3C
#303F3C
oklch(35.3% 0.02 181.5)
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 #45373B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.030
- Charcoal Grey #3C4142 ΔE 0.032
- Gunmetal #293241 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.063
- Charcoal #264653 ΔE 0.064
- Purple Brown #673A3F ΔE 0.068
- Dark Grey Blue #29465B ΔE 0.069
Use #45373B 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.