#284545
Closest named color: Charcoal (#264653). oklch(36.8% 0.035 195.7), rgb(40, 69, 69).
Aa
White text reads best on this color (10.35:1).
About this color
#284545 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.035 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.024 away. White text reads best on it, at 10.35:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.02:1 |
| White text | 10.35:1 |
Values
| HEX | #284545 |
| RGB | rgb(40, 69, 69) |
| HSL | hsl(180, 27%, 21%) |
| OKLCH | oklch(36.8% 0.035 195.7) |
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 #284545 | 10.35:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #284545 | 2.02:1 | Fails | Lc 9.9 | Not readable |
| #284545 text on white | 10.35:1 | AAA | Lc 94.0 | Preferred for body text |
| #284545 text on black | 2.02:1 | Fails | Lc -8.6 | 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
#E4EBEB
oklch(93.5% 0.007 197)
-
Step 200
200
#CFDCDC
oklch(88.5% 0.014 196.9)
-
Step 300
300
#AEC6C6
oklch(80.9% 0.026 196.6)
-
Step 400
400
#83A9A9
oklch(70.7% 0.041 196.3)
-
Step 500
500
#629494
oklch(63.1% 0.054 195.9)
-
Step 600
600
#477E7E
oklch(55.5% 0.058 195.6)
-
Step 700
700
#386A6B
oklch(49% 0.054 197.2)
-
Step 800
800
#2F5757
oklch(42.8% 0.045 195.6)
-
Step 900
900 (this color)
#284545
oklch(36.8% 0.035 195.7)
-
Step 950
950
#192A2A
oklch(27% 0.023 195.9)
#284545 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) | #424245 | 0.037 |
| Deuteranopia (no green cones) | #3C3E45 | 0.034 |
| Tritanopia (no blue cones) | #1C4745 | 0.013 |
| Achromatopsia (no color) | #404040 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284545
#284545
oklch(36.8% 0.035 195.7)
- #503839
#503839
oklch(36.8% 0.034 16.1)
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 #284545, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.024
- Charcoal Grey #3C4142 ΔE 0.028
- Dark Teal #014D4E ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.035
- Onyx #343A40 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.043
- Dark Blue Green #005249 ΔE 0.045
Use #284545 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.