#445C59
Closest named color: Dark Green Blue (#1F6357). oklch(45.4% 0.029 186.7), rgb(68, 92, 89).
Aa
White text reads best on this color (7.18:1).
About this color
#445C59 is a medium-dark close to neutral grey. In OKLCH its lightness is 45%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.041 away. White text reads best on it, at 7.18:1.
| Hue family | Neutrals |
| Lightness | medium-dark (45%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.92:1 |
| White text | 7.18:1 |
Values
| HEX | #445C59 |
| RGB | rgb(68, 92, 89) |
| HSL | hsl(173, 15%, 31%) |
| OKLCH | oklch(45.4% 0.029 186.7) |
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 #445C59 | 7.18:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #445C59 | 2.92:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #445C59 text on white | 7.18:1 | AAA | Lc 84.9 | Fine for body text |
| #445C59 text on black | 2.92:1 | Fails | Lc -17.1 | 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 800.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D3DBDA
oklch(88.5% 0.009 188.1)
-
Step 300
300
#B5C4C2
oklch(80.8% 0.017 187.2)
-
Step 400
400
#8EA6A3
oklch(70.6% 0.027 187.4)
-
Step 500
500
#72918D
oklch(63.2% 0.035 186.6)
-
Step 600
600
#5A7B77
oklch(55.6% 0.038 186.9)
-
Step 700
700
#4A6764
oklch(49% 0.034 188.1)
-
Step 800
800 (this color)
#445C59
oklch(45.4% 0.029 186.7)
-
Step 900
900
#344643
oklch(37.8% 0.023 183.7)
-
Step 950
950
#1F2927
oklch(27.1% 0.014 181.6)
#445C59 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) | #595959 | 0.031 |
| Deuteranopia (no green cones) | #555659 | 0.029 |
| Tritanopia (no blue cones) | #3D5D5B | 0.009 |
| Achromatopsia (no color) | #575757 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #445C59
#445C59
oklch(45.4% 0.029 186.7)
- #655054
#655054
oklch(45.4% 0.029 5.5)
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 #445C59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.041
- Slate #516572 ΔE 0.048
- Petrol #005F6A ΔE 0.051
- YInMn Blue #415A77 ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.052
- Dark Aqua #05696B ΔE 0.054
- Dusty Grape #545775 ΔE 0.059
- Deep Teal #00555A ΔE 0.062
Use #445C59 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.