#405E59
Closest named color: Dark Green Blue (#1F6357). oklch(45.7% 0.036 183.2), rgb(64, 94, 89).
Aa
White text reads best on this color (7.08:1).
About this color
#405E59 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.036 and its hue 183°. 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 7.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #405E59 |
| RGB | rgb(64, 94, 89) |
| HSL | hsl(170, 19%, 31%) |
| OKLCH | oklch(45.7% 0.036 183.2) |
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 #405E59 | 7.08:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #405E59 | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #405E59 text on white | 7.08:1 | AAA | Lc 84.5 | Fine for body text |
| #405E59 text on black | 2.96:1 | Fails | Lc -17.5 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D1DCDA
oklch(88.6% 0.012 184)
-
Step 300
300
#B2C5C2
oklch(80.8% 0.021 185.4)
-
Step 400
400
#8AA8A2
oklch(70.7% 0.034 181.8)
-
Step 500
500
#6C928C
oklch(63% 0.043 184.2)
-
Step 600
600
#537D76
oklch(55.7% 0.048 183)
-
Step 700
700
#446963
oklch(49.1% 0.043 183.2)
-
Step 800
800 (this color)
#405E59
oklch(45.7% 0.036 183.2)
-
Step 900
900
#314743
oklch(37.8% 0.028 182.2)
-
Step 950
950
#1D2927
oklch(26.9% 0.017 183.7)
#405E59 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) | #5B5B59 | 0.038 |
| Deuteranopia (no green cones) | #565759 | 0.036 |
| Tritanopia (no blue cones) | #375F5C | 0.010 |
| Achromatopsia (no color) | #585858 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405E59
#405E59
oklch(45.7% 0.036 183.2)
- #694F55
#694F55
oklch(45.7% 0.036 3.3)
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 #405E59, 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 0.048
- Petrol #005F6A ΔE 0.048
- Slate #516572 ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.054
- YInMn Blue #415A77 ΔE 0.055
- Deep Teal #00555A ΔE 0.060
- Dusty Grape #545775 ΔE 0.065
Use #405E59 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.