#284F40
Closest named color: Dark Blue Green (#005249). oklch(39.4% 0.052 166.8), rgb(40, 79, 64).
Aa
White text reads best on this color (9.19:1).
About this color
#284F40 is a dark, muted green. In OKLCH its lightness is 39%, its chroma 0.052 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.025 away. White text reads best on it, at 9.19:1.
| Hue family | Greens |
| Lightness | dark (39%) |
| Chroma | muted (0.052) |
| Temperature | in between |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.28:1 |
| White text | 9.19:1 |
Values
| HEX | #284F40 |
| RGB | rgb(40, 79, 64) |
| HSL | hsl(157, 33%, 23%) |
| OKLCH | oklch(39.4% 0.052 166.8) |
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 #284F40 | 9.19:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #284F40 | 2.28:1 | Fails | Lc 12.9 | Not readable |
| #284F40 text on white | 9.19:1 | AAA | Lc 91.1 | Preferred for body text |
| #284F40 text on black | 2.28:1 | Fails | Lc -11.2 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE8
oklch(93.5% 0.011 167.8)
-
Step 200
200
#CCDED6
oklch(88.5% 0.022 167.4)
-
Step 300
300
#AAC9BB
oklch(80.9% 0.039 166.3)
-
Step 400
400
#7BAD98
oklch(70.6% 0.062 166.7)
-
Step 500
500
#56997F
oklch(63.1% 0.08 166.8)
-
Step 600
600
#398368
oklch(55.5% 0.086 166.6)
-
Step 700
700
#2A6F57
oklch(49.1% 0.08 167.1)
-
Step 800
800
#255B47
oklch(42.8% 0.067 166.2)
-
Step 900
900 (this color)
#284F40
oklch(39.4% 0.052 166.8)
-
Step 950
950
#162C23
oklch(27.1% 0.033 165.9)
#284F40 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) | #4D4A3F | 0.052 |
| Deuteranopia (no green cones) | #474641 | 0.049 |
| Tritanopia (no blue cones) | #1C4F4B | 0.020 |
| Achromatopsia (no color) | #484848 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284F40
#284F40
oklch(39.4% 0.052 166.8)
- #5B3B4B
#5B3B4B
oklch(39.5% 0.051 348.3)
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 #284F40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.028
- Dark Teal #014D4E ΔE 0.035
- Deep Teal #00555A ΔE 0.043
- Charcoal #264653 ΔE 0.051
- Evergreen #05472A ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.052
- Pine #2B5D34 ΔE 0.056
Use #284F40 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.