#304D41
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.3% 0.041 166.4), rgb(48, 77, 65).
Aa
White text reads best on this color (9.27:1).
About this color
#304D41 is a dark, muted green. In OKLCH its lightness is 39%, its chroma 0.041 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.022 away. White text reads best on it, at 9.27:1.
| Hue family | Greens |
| Lightness | dark (39%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #304D41 |
| RGB | rgb(48, 77, 65) |
| HSL | hsl(155, 23%, 25%) |
| OKLCH | oklch(39.3% 0.041 166.4) |
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 #304D41 | 9.27:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #304D41 | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #304D41 text on white | 9.27:1 | AAA | Lc 91.4 | Preferred for body text |
| #304D41 text on black | 2.26:1 | Fails | Lc -11.0 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECE8
oklch(93.7% 0.009 161.3)
-
Step 200
200
#CFDDD7
oklch(88.5% 0.017 168.4)
-
Step 300
300
#AFC7BC
oklch(80.8% 0.03 166.3)
-
Step 400
400
#84AB9A
oklch(70.8% 0.049 166.5)
-
Step 500
500
#649681
oklch(63.1% 0.063 166.3)
-
Step 600
600
#4A806A
oklch(55.5% 0.068 166)
-
Step 700
700
#3B6C59
oklch(49.1% 0.062 166.9)
-
Step 800
800
#315849
oklch(42.6% 0.051 167.3)
-
Step 900
900 (this color)
#304D41
oklch(39.3% 0.041 166.4)
-
Step 950
950
#1A2B24
oklch(27.1% 0.026 166.8)
#304D41 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) | #4C4940 | 0.041 |
| Deuteranopia (no green cones) | #474642 | 0.039 |
| Tritanopia (no blue cones) | #294D49 | 0.015 |
| Achromatopsia (no color) | #474747 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304D41
#304D41
oklch(39.3% 0.041 166.4)
- #563D4A
#563D4A
oklch(39.2% 0.04 346.6)
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 #304D41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.022
- Dark Blue Green #005249 ΔE 0.033
- Dark Teal #014D4E ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.042
- Charcoal #264653 ΔE 0.046
- Deep Teal #00555A ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.057
- Evergreen #05472A ΔE 0.058
Use #304D41 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.