#405B5A
Closest named color: Dark Green Blue (#1F6357). oklch(44.9% 0.032 193.2), rgb(64, 91, 90).
Aa
White text reads best on this color (7.33:1).
About this color
#405B5A is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.032 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.040 away. White text reads best on it, at 7.33:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.86:1 |
| White text | 7.33:1 |
Values
| HEX | #405B5A |
| RGB | rgb(64, 91, 90) |
| HSL | hsl(178, 17%, 30%) |
| OKLCH | oklch(44.9% 0.032 193.2) |
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 #405B5A | 7.33:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #405B5A | 2.86:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #405B5A text on white | 7.33:1 | AAA | Lc 85.5 | Fine for body text |
| #405B5A text on black | 2.86:1 | Fails | Lc -16.6 | 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
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D2DBDB
oklch(88.5% 0.01 197)
-
Step 300
300
#B3C5C4
oklch(80.9% 0.02 192.7)
-
Step 400
400
#8CA7A6
oklch(70.8% 0.03 193.7)
-
Step 500
500
#6F9190
oklch(63.1% 0.038 194)
-
Step 600
600
#567B7A
oklch(55.5% 0.042 193.9)
-
Step 700
700
#466867
oklch(49.1% 0.039 193.6)
-
Step 800
800 (this color)
#405B5A
oklch(44.9% 0.032 193.2)
-
Step 900
900
#324645
oklch(37.7% 0.025 192.3)
-
Step 950
950
#1D2929
oklch(27% 0.017 196.2)
#405B5A 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) | #58585A | 0.035 |
| Deuteranopia (no green cones) | #53545A | 0.033 |
| Tritanopia (no blue cones) | #375D5B | 0.011 |
| Achromatopsia (no color) | #565656 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405B5A
#405B5A
oklch(44.9% 0.032 193.2)
- #664E50
#664E50
oklch(45% 0.033 12.9)
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 #405B5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.040
- Petrol #005F6A ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.047
- YInMn Blue #415A77 ΔE 0.050
- Slate #516572 ΔE 0.052
- Dark Aqua #05696B ΔE 0.053
- Deep Teal #00555A ΔE 0.055
- Dusty Grape #545775 ΔE 0.059
Use #405B5A 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.