#366E58
Closest named color: Dark Aquamarine (#017371). oklch(49.3% 0.07 165.8), rgb(54, 110, 88).
Aa
White text reads best on this color (5.95:1).
About this color
#366E58 is a medium-dark, muted green. In OKLCH its lightness is 49%, its chroma 0.070 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.040 away. White text reads best on it, at 5.95:1.
| Hue family | Greens |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.070) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.52:1 |
| White text | 5.95:1 |
Values
| HEX | #366E58 |
| RGB | rgb(54, 110, 88) |
| HSL | hsl(156, 34%, 32%) |
| OKLCH | oklch(49.3% 0.07 165.8) |
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 #366E58 | 5.95:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #366E58 | 3.52:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #366E58 text on white | 5.95:1 | AA | Lc 79.6 | Fine for body text |
| #366E58 text on black | 3.52:1 | AA large text | Lc -22.2 | 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 700.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CEDDD6
oklch(88.4% 0.019 166.3)
-
Step 300
300
#ADC8BB
oklch(80.9% 0.034 164.9)
-
Step 400
400
#81AC99
oklch(70.8% 0.054 165.9)
-
Step 500
500
#5F9780
oklch(63.1% 0.069 166.3)
-
Step 600
600
#448169
oklch(55.5% 0.075 166.2)
-
Step 700
700 (this color)
#366E58
oklch(49.3% 0.07 165.8)
-
Step 800
800
#2D5948
oklch(42.7% 0.057 166.6)
-
Step 900
900
#29493C
oklch(37.6% 0.044 166.2)
-
Step 950
950
#182B23
oklch(27% 0.029 165.8)
#366E58 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) | #6C6757 | 0.070 |
| Deuteranopia (no green cones) | #636159 | 0.067 |
| Tritanopia (no blue cones) | #236E68 | 0.027 |
| Achromatopsia (no color) | #646464 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #366E58
#366E58
oklch(49.3% 0.07 165.8)
- #7E516A
#7E516A
oklch(49.3% 0.07 345.5)
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 #366E58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.043
- Deep Turquoise #017374 ΔE 0.044
- Dark Aqua #05696B ΔE 0.046
- Bluegreen #017A79 ΔE 0.053
- Dark Olive Green #556B2F ΔE 0.057
- Deep Aqua #08787F ΔE 0.059
- Dark Moss Green #606C38 ΔE 0.059
Use #366E58 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.