#284C3F
Closest named color: Dark Blue Green (#005249). oklch(38.5% 0.048 168.5), rgb(40, 76, 63).
Aa
White text reads best on this color (9.56:1).
About this color
#284C3F is a dark, muted green. In OKLCH its lightness is 39%, its chroma 0.048 and its hue 168°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.028 away. White text reads best on it, at 9.56:1.
| Hue family | Greens |
| Lightness | dark (39%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #284C3F |
| RGB | rgb(40, 76, 63) |
| HSL | hsl(158, 31%, 23%) |
| OKLCH | oklch(38.5% 0.048 168.5) |
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 #284C3F | 9.56:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #284C3F | 2.19:1 | Fails | Lc 11.9 | Not readable |
| #284C3F text on white | 9.56:1 | AAA | Lc 92.0 | Preferred for body text |
| #284C3F text on black | 2.19:1 | Fails | Lc -10.4 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CDDED7
oklch(88.6% 0.021 169.3)
-
Step 300
300
#ABC8BC
oklch(80.8% 0.035 168.5)
-
Step 400
400
#7DAD9A
oklch(70.8% 0.058 168.2)
-
Step 500
500
#5A9881
oklch(63.1% 0.074 168.2)
-
Step 600
600
#3E826B
oklch(55.5% 0.079 168.9)
-
Step 700
700
#2F6E59
oklch(49% 0.074 168.7)
-
Step 800
800
#285A49
oklch(42.8% 0.062 168.7)
-
Step 900
900 (this color)
#284C3F
oklch(38.5% 0.048 168.5)
-
Step 950
950
#172B24
oklch(26.9% 0.029 169.8)
#284C3F 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) | #4A483E | 0.048 |
| Deuteranopia (no green cones) | #454340 | 0.048 |
| Tritanopia (no blue cones) | #1D4C48 | 0.017 |
| Achromatopsia (no color) | #454545 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284C3F
#284C3F
oklch(38.5% 0.048 168.5)
- #573948
#573948
oklch(38.5% 0.048 348.2)
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 #284C3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.029
- Dark Teal #014D4E ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.045
- Charcoal #264653 ΔE 0.045
- Deep Teal #00555A ΔE 0.046
- Evergreen #05472A ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.058
Use #284C3F 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.