#445C66
Closest named color: YInMn Blue (#415A77). oklch(45.9% 0.033 225.5), rgb(68, 92, 102).
Aa
White text reads best on this color (7.07:1).
About this color
#445C66 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.033 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.031 away. White text reads best on it, at 7.07:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #445C66 |
| RGB | rgb(68, 92, 102) |
| HSL | hsl(198, 20%, 33%) |
| OKLCH | oklch(45.9% 0.033 225.5) |
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 #445C66 | 7.07:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #445C66 | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #445C66 text on white | 7.07:1 | AAA | Lc 84.5 | Fine for body text |
| #445C66 text on black | 2.96:1 | Fails | Lc -17.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D3DADE
oklch(88.4% 0.009 232.4)
-
Step 300
300
#B6C3C8
oklch(80.9% 0.016 222.7)
-
Step 400
400
#90A4AD
oklch(70.6% 0.026 226.6)
-
Step 500
500
#758E99
oklch(63.1% 0.033 226.4)
-
Step 600
600
#5D7883
oklch(55.6% 0.036 224.7)
-
Step 700
700 (this color)
#445C66
oklch(45.9% 0.033 225.5)
-
Step 800
800
#3F525B
oklch(42.6% 0.028 228.5)
-
Step 900
900
#36444A
oklch(37.7% 0.021 225.8)
-
Step 950
950
#20282B
oklch(27% 0.013 222.5)
#445C66 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) | #575B67 | 0.027 |
| Deuteranopia (no green cones) | #515766 | 0.023 |
| Tritanopia (no blue cones) | #395F5F | 0.022 |
| Achromatopsia (no color) | #585858 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #445C66
#445C66
oklch(45.9% 0.033 225.5)
- #685249
#685249
oklch(45.9% 0.033 43.4)
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 #445C66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.031
- Slate #516572 ΔE 0.037
- Dusty Grape #545775 ΔE 0.041
- Petrol #005F6A ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.053
- Dark Aqua #05696B ΔE 0.054
- Dusk #4E5481 ΔE 0.059
- Dark Slate Gray #2F4F4F ΔE 0.059
Use #445C66 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.