#405D59
Closest named color: Dark Green Blue (#1F6357). oklch(45.4% 0.035 185.4), rgb(64, 93, 89).
Aa
White text reads best on this color (7.17:1).
About this color
#405D59 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.035 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.036 away. White text reads best on it, at 7.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #405D59 |
| RGB | rgb(64, 93, 89) |
| HSL | hsl(172, 18%, 31%) |
| OKLCH | oklch(45.4% 0.035 185.4) |
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 #405D59 | 7.17:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #405D59 | 2.92:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #405D59 text on white | 7.17:1 | AAA | Lc 84.9 | Fine for body text |
| #405D59 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D1DCDA
oklch(88.6% 0.012 184)
-
Step 300
300
#B3C5C2
oklch(80.9% 0.02 184.8)
-
Step 400
400
#8BA8A3
oklch(70.8% 0.033 183.8)
-
Step 500
500
#6D928D
oklch(63.1% 0.042 185.9)
-
Step 600
600
#547C77
oklch(55.5% 0.045 186.2)
-
Step 700
700
#456964
oklch(49.2% 0.042 185)
-
Step 800
800 (this color)
#405D59
oklch(45.4% 0.035 185.4)
-
Step 900
900
#314643
oklch(37.6% 0.027 185.2)
-
Step 950
950
#1D2928
oklch(26.9% 0.017 189.9)
#405D59 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) | #5A5A59 | 0.037 |
| Deuteranopia (no green cones) | #555659 | 0.035 |
| Tritanopia (no blue cones) | #375E5C | 0.011 |
| Achromatopsia (no color) | #575757 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405D59
#405D59
oklch(45.4% 0.035 185.4)
- #684F54
#684F54
oklch(45.5% 0.034 5.2)
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 #405D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.036
- Petrol #005F6A ΔE 0.047
- Dark Aqua #05696B ΔE 0.049
- Slate #516572 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.052
- YInMn Blue #415A77 ΔE 0.054
- Deep Teal #00555A ΔE 0.059
- Dusty Grape #545775 ΔE 0.063
Use #405D59 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.