#284B3F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(38.2% 0.046 169.7), rgb(40, 75, 63).
Aa
White text reads best on this color (9.68:1).
About this color
#284B3F is a dark, muted green. In OKLCH its lightness is 38%, its chroma 0.046 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.029 away. White text reads best on it, at 9.68:1.
| Hue family | Greens |
| Lightness | dark (38%) |
| Chroma | muted (0.046) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.16:1 |
| White text | 9.68:1 |
Values
| HEX | #284B3F |
| RGB | rgb(40, 75, 63) |
| HSL | hsl(159, 30%, 23%) |
| OKLCH | oklch(38.2% 0.046 169.7) |
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 #284B3F | 9.68:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #284B3F | 2.16:1 | Fails | Lc 11.6 | Not readable |
| #284B3F text on white | 9.68:1 | AAA | Lc 92.4 | Preferred for body text |
| #284B3F text on black | 2.16:1 | Fails | Lc -10.1 | 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
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CDDDD7
oklch(88.4% 0.019 171.4)
-
Step 300
300
#ACC8BD
oklch(80.9% 0.034 169.8)
-
Step 400
400
#7EAC9B
oklch(70.6% 0.055 169.9)
-
Step 500
500
#5C9883
oklch(63.2% 0.071 169.7)
-
Step 600
600
#3F826C
oklch(55.6% 0.077 169.6)
-
Step 700
700
#316E5A
oklch(49.2% 0.072 169.3)
-
Step 800
800
#2A594A
oklch(42.6% 0.058 170.4)
-
Step 900
900 (this color)
#284B3F
oklch(38.2% 0.046 169.7)
-
Step 950
950
#172B24
oklch(26.9% 0.029 169.8)
#284B3F 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) | #49473E | 0.046 |
| Deuteranopia (no green cones) | #444340 | 0.045 |
| Tritanopia (no blue cones) | #1D4B47 | 0.016 |
| Achromatopsia (no color) | #444444 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284B3F
#284B3F
oklch(38.2% 0.046 169.7)
- #563946
#563946
oklch(38.3% 0.045 351)
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 #284B3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.029
- Dark Blue Green #005249 ΔE 0.030
- Dark Teal #014D4E ΔE 0.031
- Charcoal Grey #3C4142 ΔE 0.043
- Charcoal #264653 ΔE 0.043
- Evergreen #05472A ΔE 0.047
- Deep Teal #00555A ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.056
Use #284B3F 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.