#284342
Closest named color: Charcoal (#264653). oklch(36.1% 0.033 192.8), rgb(40, 67, 66).
Aa
White text reads best on this color (10.65:1).
About this color
#284342 is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.033 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.028 away. White text reads best on it, at 10.65:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.97:1 |
| White text | 10.65:1 |
Values
| HEX | #284342 |
| RGB | rgb(40, 67, 66) |
| HSL | hsl(178, 25%, 21%) |
| OKLCH | oklch(36.1% 0.033 192.8) |
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 #284342 | 10.65:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #284342 | 1.97:1 | Fails | Lc 9.3 | Not readable |
| #284342 text on white | 10.65:1 | AAA | Lc 94.6 | Preferred for body text |
| #284342 text on black | 1.97:1 | Fails | Lc -8.0 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDB
oklch(88.4% 0.014 191.4)
-
Step 300
300
#AFC6C5
oklch(80.9% 0.025 193.5)
-
Step 400
400
#85A9A7
oklch(70.8% 0.039 192.1)
-
Step 500
500
#659492
oklch(63.2% 0.051 192.6)
-
Step 600
600
#4B7E7C
oklch(55.7% 0.055 192.5)
-
Step 700
700
#3C6A69
oklch(49.1% 0.051 193.8)
-
Step 800
800
#325655
oklch(42.6% 0.042 193.4)
-
Step 900
900 (this color)
#284342
oklch(36.1% 0.033 192.8)
-
Step 950
950
#1A2A29
oklch(27% 0.022 191)
#284342 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) | #404042 | 0.035 |
| Deuteranopia (no green cones) | #3B3D42 | 0.032 |
| Tritanopia (no blue cones) | #1D4443 | 0.012 |
| Achromatopsia (no color) | #3E3E3E | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284342
#284342
oklch(36.1% 0.033 192.8)
- #4D3638
#4D3638
oklch(36% 0.033 13.1)
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 #284342, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.028
- Onyx #343A40 ΔE 0.032
- Dark Teal #014D4E ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.043
- Midnight Green #073B4C ΔE 0.048
Use #284342 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.