#17565B
Closest named color: Deep Teal (#00555A). oklch(41.7% 0.062 202.8), rgb(23, 86, 91).
Aa
White text reads best on this color (8.33:1).
About this color
#17565B is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.062 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.011 away. White text reads best on it, at 8.33:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.51:1 |
| White text | 8.33:1 |
Values
| HEX | #17565B |
| RGB | rgb(23, 86, 91) |
| HSL | hsl(184, 60%, 22%) |
| OKLCH | oklch(41.7% 0.062 202.8) |
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 #17565B | 8.33:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #17565B | 2.51:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #17565B text on white | 8.33:1 | AAA | Lc 88.5 | Fine for body text |
| #17565B text on black | 2.51:1 | Fails | Lc -13.7 | Not readable |
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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A6C8CB
oklch(80.9% 0.037 203)
-
Step 400
400
#75ACB0
oklch(70.8% 0.058 201.7)
-
Step 500
500
#4D979D
oklch(63.1% 0.074 202.4)
-
Step 600
600
#2B8188
oklch(55.6% 0.08 202.9)
-
Step 700
700
#1C6D73
oklch(49.1% 0.075 202.4)
-
Step 800
800 (this color)
#17565B
oklch(41.7% 0.062 202.8)
-
Step 900
900
#1D494D
oklch(37.6% 0.049 203.4)
-
Step 950
950
#122B2D
oklch(27% 0.031 202.3)
#17565B 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) | #4F525B | 0.062 |
| Deuteranopia (no green cones) | #454B5B | 0.057 |
| Tritanopia (no blue cones) | #005A57 | 0.018 |
| Achromatopsia (no color) | #4E4E4E | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17565B
#17565B
oklch(41.7% 0.062 202.8)
- #6A3E3C
#6A3E3C
oklch(41.6% 0.062 22.9)
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 #17565B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.011
- Dark Slate Gray #2F4F4F ΔE 0.029
- Petrol #005F6A ΔE 0.032
- Dark Blue Green #005249 ΔE 0.034
- Dark Teal #014D4E ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.053
Use #17565B 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.