#366563
Closest named color: Dark Aqua (#05696B). oklch(47.3% 0.052 192), rgb(54, 101, 99).
Aa
White text reads best on this color (6.56:1).
About this color
#366563 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.052 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.028 away. White text reads best on it, at 6.56:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.19:1 |
| White text | 6.56:1 |
Values
| HEX | #366563 |
| RGB | rgb(54, 101, 99) |
| HSL | hsl(177, 30%, 30%) |
| OKLCH | oklch(47.3% 0.052 192) |
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 #366563 | 6.56:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #366563 | 3.19:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #366563 text on white | 6.56:1 | AA | Lc 82.4 | Fine for body text |
| #366563 text on black | 3.19:1 | AA large text | Lc -19.5 | 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 700.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDB
oklch(88.4% 0.014 191.4)
-
Step 300
300
#AFC6C5
oklch(80.9% 0.025 193.5)
-
Step 400
400
#84A9A7
oklch(70.7% 0.04 192.2)
-
Step 500
500
#649491
oklch(63.1% 0.052 191)
-
Step 600
600
#4A7E7C
oklch(55.6% 0.056 192.5)
-
Step 700
700 (this color)
#366563
oklch(47.3% 0.052 192)
-
Step 800
800
#315755
oklch(42.8% 0.044 191.3)
-
Step 900
900
#2C4746
oklch(37.6% 0.033 192.9)
-
Step 950
950
#1A2A29
oklch(27% 0.022 191)
#366563 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) | #606163 | 0.054 |
| Deuteranopia (no green cones) | #585B63 | 0.050 |
| Tritanopia (no blue cones) | #1F6764 | 0.018 |
| Achromatopsia (no color) | #5D5D5D | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #366563
#366563
oklch(47.3% 0.052 192)
- #765054
#765054
oklch(47.4% 0.051 12.3)
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 #366563, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.028
- Dark Green Blue #1F6357 ΔE 0.030
- Petrol #005F6A ΔE 0.042
- Slate #516572 ΔE 0.043
- Dark Aquamarine #017371 ΔE 0.045
- Deep Turquoise #017374 ΔE 0.046
- YInMn Blue #415A77 ΔE 0.056
- Deep Aqua #08787F ΔE 0.062
Use #366563 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.