#304537
Closest named color: Charcoal Grey (#3C4142). oklch(36.8% 0.036 155.1), rgb(48, 69, 55).
Aa
White text reads best on this color (10.33:1).
About this color
#304537 is a dark, muted green. In OKLCH its lightness is 37%, its chroma 0.036 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.033 away. White text reads best on it, at 10.33:1.
| Hue family | Greens |
| Lightness | dark (37%) |
| Chroma | muted (0.036) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.03:1 |
| White text | 10.33:1 |
Values
| HEX | #304537 |
| RGB | rgb(48, 69, 55) |
| HSL | hsl(140, 18%, 23%) |
| OKLCH | oklch(36.8% 0.036 155.1) |
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 #304537 | 10.33:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #304537 | 2.03:1 | Fails | Lc 10.0 | Not readable |
| #304537 text on white | 10.33:1 | AAA | Lc 94.0 | Preferred for body text |
| #304537 text on black | 2.03:1 | Fails | Lc -8.6 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD5
oklch(88.5% 0.014 155.6)
-
Step 300
300
#B4C6B9
oklch(80.9% 0.027 154.4)
-
Step 400
400
#8CA995
oklch(70.7% 0.043 155)
-
Step 500
500
#6F947B
oklch(63.2% 0.056 155)
-
Step 600
600
#577E64
oklch(55.6% 0.06 154.8)
-
Step 700
700
#476A53
oklch(49.1% 0.055 155.1)
-
Step 800
800
#3A5744
oklch(42.8% 0.047 155.2)
-
Step 900
900 (this color)
#304537
oklch(36.8% 0.036 155.1)
-
Step 950
950
#1E2A22
oklch(27.1% 0.022 155.5)
#304537 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) | #454236 | 0.032 |
| Deuteranopia (no green cones) | #413F38 | 0.032 |
| Tritanopia (no blue cones) | #2D4541 | 0.017 |
| Achromatopsia (no color) | #404040 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304537
#304537
oklch(36.8% 0.036 155.1)
- #4B3847
#4B3847
oklch(36.7% 0.036 333.8)
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 #304537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.043
- Onyx #343A40 ΔE 0.045
- Dark Teal #014D4E ΔE 0.046
- Evergreen #05472A ΔE 0.047
- Charcoal #264653 ΔE 0.047
- Dark Blue Green #005249 ΔE 0.049
- Pine Green #0A481E ΔE 0.059
Use #304537 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.