#284E44
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.2% 0.047 174.8), rgb(40, 78, 68).
Aa
White text reads best on this color (9.27:1).
About this color
#284E44 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.047 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.021 away. White text reads best on it, at 9.27:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #284E44 |
| RGB | rgb(40, 78, 68) |
| HSL | hsl(164, 32%, 23%) |
| OKLCH | oklch(39.2% 0.047 174.8) |
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 #284E44 | 9.27:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #284E44 | 2.26:1 | Fails | Lc 12.7 | Not readable |
| #284E44 text on white | 9.27:1 | AAA | Lc 91.3 | Preferred for body text |
| #284E44 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDED8
oklch(88.6% 0.02 172.7)
-
Step 300
300
#AAC8BF
oklch(80.8% 0.035 175.4)
-
Step 400
400
#7BAD9E
oklch(70.8% 0.058 174)
-
Step 500
500
#579887
oklch(63.1% 0.072 175.1)
-
Step 600
600
#398270
oklch(55.5% 0.079 174.7)
-
Step 700
700
#2B6E5E
oklch(49% 0.073 174.8)
-
Step 800
800
#255A4D
oklch(42.8% 0.061 174.8)
-
Step 900
900 (this color)
#284E44
oklch(39.2% 0.047 174.8)
-
Step 950
950
#162B25
oklch(26.9% 0.03 173.8)
#284E44 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) | #4C4A44 | 0.050 |
| Deuteranopia (no green cones) | #454545 | 0.047 |
| Tritanopia (no blue cones) | #1A4F4B | 0.015 |
| Achromatopsia (no color) | #474747 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284E44
#284E44
oklch(39.2% 0.047 174.8)
- #5A3B47
#5A3B47
oklch(39.2% 0.047 354.6)
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 #284E44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.021
- Dark Blue Green #005249 ΔE 0.024
- Dark Teal #014D4E ΔE 0.029
- Deep Teal #00555A ΔE 0.039
- Charcoal #264653 ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.055
- Evergreen #05472A ΔE 0.055
Use #284E44 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.