#405D5A
Closest named color: Dark Green Blue (#1F6357). oklch(45.5% 0.035 188), rgb(64, 93, 90).
Aa
White text reads best on this color (7.16:1).
About this color
#405D5A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.035 and its hue 188°. 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 7.16:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #405D5A |
| RGB | rgb(64, 93, 90) |
| HSL | hsl(174, 18%, 31%) |
| OKLCH | oklch(45.5% 0.035 188) |
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 #405D5A | 7.16:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #405D5A | 2.93:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #405D5A text on white | 7.16:1 | AAA | Lc 84.8 | Fine for body text |
| #405D5A text on black | 2.93:1 | Fails | Lc -17.2 | 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
#B3C5C3
oklch(80.9% 0.02 188.7)
-
Step 400
400
#8AA7A4
oklch(70.6% 0.032 188.8)
-
Step 500
500
#6D928E
oklch(63.1% 0.041 187.9)
-
Step 600
600
#547C78
oklch(55.5% 0.045 188.1)
-
Step 700
700
#446965
oklch(49.2% 0.043 187.3)
-
Step 800
800 (this color)
#405D5A
oklch(45.5% 0.035 188)
-
Step 900
900
#314644
oklch(37.6% 0.027 188.8)
-
Step 950
950
#1D2928
oklch(26.9% 0.017 189.9)
#405D5A 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) | #5A5A5A | 0.037 |
| Deuteranopia (no green cones) | #54565A | 0.034 |
| Tritanopia (no blue cones) | #375E5C | 0.010 |
| Achromatopsia (no color) | #585858 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405D5A
#405D5A
oklch(45.5% 0.035 188)
- #684F53
#684F53
oklch(45.5% 0.034 7.8)
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 #405D5A, 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 0.049
- Dark Slate Gray #2F4F4F ΔE 0.052
- YInMn Blue #415A77 ΔE 0.052
- Deep Teal #00555A ΔE 0.058
- Dusty Grape #545775 ΔE 0.062
Use #405D5A 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.