#405B59
Closest named color: Dark Green Blue (#1F6357). oklch(44.9% 0.032 190.3), rgb(64, 91, 89).
Aa
White text reads best on this color (7.34:1).
About this color
#405B59 is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.032 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.039 away. White text reads best on it, at 7.34:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.85:1 |
| White text | 7.34:1 |
Values
| HEX | #405B59 |
| RGB | rgb(64, 91, 89) |
| HSL | hsl(176, 17%, 30%) |
| OKLCH | oklch(44.9% 0.032 190.3) |
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 #405B59 | 7.34:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #405B59 | 2.85:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #405B59 text on white | 7.34:1 | AAA | Lc 85.5 | Fine for body text |
| #405B59 text on black | 2.85:1 | Fails | Lc -16.5 | 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 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
#D2DBDA
oklch(88.4% 0.01 189)
-
Step 300
300
#B4C5C3
oklch(81% 0.019 188.3)
-
Step 400
400
#8CA7A5
oklch(70.7% 0.03 191)
-
Step 500
500
#6F918F
oklch(63% 0.038 191.7)
-
Step 600
600
#567C79
oklch(55.7% 0.043 189.8)
-
Step 700
700
#466866
oklch(49.1% 0.039 191.3)
-
Step 800
800 (this color)
#405B59
oklch(44.9% 0.032 190.3)
-
Step 900
900
#324645
oklch(37.7% 0.025 192.3)
-
Step 950
950
#1E2928
oklch(27% 0.015 189.4)
#405B59 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) | #585859 | 0.035 |
| Deuteranopia (no green cones) | #535459 | 0.033 |
| Tritanopia (no blue cones) | #375C5A | 0.011 |
| Achromatopsia (no color) | #565656 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405B59
#405B59
oklch(44.9% 0.032 190.3)
- #664E51
#664E51
oklch(45% 0.033 10.1)
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 #405B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.046
- Petrol #005F6A ΔE 0.047
- YInMn Blue #415A77 ΔE 0.052
- Slate #516572 ΔE 0.053
- Dark Aqua #05696B ΔE 0.053
- Deep Teal #00555A ΔE 0.055
- Dusty Grape #545775 ΔE 0.061
Use #405B59 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.