#445B57
Closest named color: Dark Green Blue (#1F6357). oklch(45.1% 0.029 183.2), rgb(68, 91, 87).
Aa
White text reads best on this color (7.29:1).
About this color
#445B57 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 0.042 away. White text reads best on it, at 7.29:1.
| Hue family | Neutrals |
| Lightness | medium-dark (45%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #445B57 |
| RGB | rgb(68, 91, 87) |
| HSL | hsl(170, 14%, 31%) |
| OKLCH | oklch(45.1% 0.029 183.2) |
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 #445B57 | 7.29:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #445B57 | 2.87:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #445B57 text on white | 7.29:1 | AAA | Lc 85.3 | Fine for body text |
| #445B57 text on black | 2.87:1 | Fails | Lc -16.7 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D3DBDA
oklch(88.5% 0.009 188.1)
-
Step 300
300
#B5C4C1
oklch(80.8% 0.017 182.6)
-
Step 400
400
#8FA6A2
oklch(70.6% 0.026 183.9)
-
Step 500
500
#73918B
oklch(63.2% 0.035 181.6)
-
Step 600
600
#5B7B75
oklch(55.6% 0.038 182.1)
-
Step 700
700
#4B6762
oklch(49% 0.034 182.7)
-
Step 800
800 (this color)
#445B57
oklch(45.1% 0.029 183.2)
-
Step 900
900
#354643
oklch(37.8% 0.022 183.1)
-
Step 950
950
#1F2927
oklch(27.1% 0.014 181.6)
#445B57 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) | #595857 | 0.031 |
| Deuteranopia (no green cones) | #545557 | 0.028 |
| Tritanopia (no blue cones) | #3E5C5A | 0.008 |
| Achromatopsia (no color) | #565656 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #445B57
#445B57
oklch(45.1% 0.029 183.2)
- #644F54
#644F54
oklch(45.1% 0.029 2.4)
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 #445B57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.049
- Slate #516572 ΔE 0.052
- Petrol #005F6A ΔE 0.053
- YInMn Blue #415A77 ΔE 0.054
- Dark Aqua #05696B ΔE 0.056
- Deep Teal #00555A ΔE 0.060
- Dusty Grape #545775 ΔE 0.061
Use #445B57 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.