#17536B
Closest named color: Deep Teal (#00555A). oklch(41.6% 0.071 229.2), rgb(23, 83, 107).
Aa
White text reads best on this color (8.44:1).
About this color
#17536B is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 42%, its chroma 0.071 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.034 away. White text reads best on it, at 8.44:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.48:1 |
| White text | 8.44:1 |
Values
| HEX | #17536B |
| RGB | rgb(23, 83, 107) |
| HSL | hsl(197, 65%, 25%) |
| OKLCH | oklch(41.6% 0.071 229.2) |
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 #17536B | 8.44:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #17536B | 2.48:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #17536B text on white | 8.44:1 | AAA | Lc 88.8 | Fine for body text |
| #17536B text on black | 2.48:1 | Fails | Lc -13.4 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADCE6
oklch(88.4% 0.024 231.9)
-
Step 300
300
#A6C6D6
oklch(80.8% 0.041 229.5)
-
Step 400
400
#74A9C2
oklch(70.7% 0.067 229.1)
-
Step 500
500
#4D93B3
oklch(63.1% 0.085 229.9)
-
Step 600
600
#2B7D9F
oklch(55.6% 0.093 229.7)
-
Step 700
700
#1C6988
oklch(49% 0.087 229.9)
-
Step 800
800 (this color)
#17536B
oklch(41.6% 0.071 229.2)
-
Step 900
900
#1D4759
oklch(37.7% 0.056 229)
-
Step 950
950
#122A34
oklch(27.1% 0.035 227.4)
#17536B 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) | #47526C | 0.051 |
| Deuteranopia (no green cones) | #3B496B | 0.044 |
| Tritanopia (no blue cones) | #005A5B | 0.042 |
| Achromatopsia (no color) | #4D4D4D | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17536B
#17536B
oklch(41.6% 0.071 229.2)
- #6B4027
#6B4027
oklch(41.7% 0.071 50)
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 #17536B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.038
- Petrol #005F6A ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.043
- Light Navy #155084 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.047
- Charcoal #264653 ΔE 0.049
- Dark Teal #014D4E ΔE 0.052
Use #17536B 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.