#405F5B
Closest named color: Dark Green Blue (#1F6357). oklch(46% 0.037 185.9), rgb(64, 95, 91).
Aa
White text reads best on this color (6.98:1).
About this color
#405F5B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.037 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.034 away. White text reads best on it, at 6.98:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #405F5B |
| RGB | rgb(64, 95, 91) |
| HSL | hsl(172, 19%, 31%) |
| OKLCH | oklch(46% 0.037 185.9) |
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 #405F5B | 6.98:1 | AA | Lc -89.1 | Fine for body text |
| Black text on #405F5B | 3.00:1 | AA large text | Lc 19.9 | Dividers and decoration only |
| #405F5B text on white | 6.98:1 | AA | Lc 84.2 | Fine for body text |
| #405F5B text on black | 3.00:1 | AA large text | Lc -17.8 | 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
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DBDA
oklch(88.4% 0.01 189)
-
Step 300
300
#B4C5C2
oklch(81% 0.019 184.1)
-
Step 400
400
#8DA7A3
oklch(70.7% 0.029 185.2)
-
Step 500
500
#71918D
oklch(63.1% 0.036 186.9)
-
Step 600
600
#597B77
oklch(55.6% 0.039 187.1)
-
Step 700
700 (this color)
#405F5B
oklch(46% 0.037 185.9)
-
Step 800
800
#3C5551
oklch(42.8% 0.031 183.9)
-
Step 900
900
#334643
oklch(37.7% 0.025 184.3)
-
Step 950
950
#1E2927
oklch(27% 0.016 182.8)
#405F5B 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) | #5C5C5B | 0.039 |
| Deuteranopia (no green cones) | #56575B | 0.038 |
| Tritanopia (no blue cones) | #36605E | 0.011 |
| Achromatopsia (no color) | #595959 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405F5B
#405F5B
oklch(46% 0.037 185.9)
- #6B5055
#6B5055
oklch(46.1% 0.037 6.3)
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 #405F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.034
- Dark Aqua #05696B ΔE 0.045
- Slate #516572 ΔE 0.046
- Petrol #005F6A ΔE 0.047
- YInMn Blue #415A77 ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.057
- Deep Teal #00555A ΔE 0.062
- Dusty Grape #545775 ΔE 0.063
Use #405F5B 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.