#175166
Closest named color: Deep Teal (#00555A). oklch(40.8% 0.068 226.5), rgb(23, 81, 102).
Aa
White text reads best on this color (8.73:1).
About this color
#175166 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.068 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.030 away. White text reads best on it, at 8.73:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #175166 |
| RGB | rgb(23, 81, 102) |
| HSL | hsl(196, 63%, 25%) |
| OKLCH | oklch(40.8% 0.068 226.5) |
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 #175166 | 8.73:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #175166 | 2.40:1 | Fails | Lc 14.3 | Not readable |
| #175166 text on white | 8.73:1 | AAA | Lc 89.6 | Fine for body text |
| #175166 text on black | 2.40:1 | Fails | Lc -12.6 | 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
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A7C6D5
oklch(80.9% 0.04 228.7)
-
Step 400
400
#76A9BF
oklch(70.7% 0.063 226.7)
-
Step 500
500
#4F94AF
oklch(63.2% 0.081 225.8)
-
Step 600
600
#2F7D9B
oklch(55.5% 0.088 227.2)
-
Step 700
700
#206A84
oklch(49.2% 0.081 225.9)
-
Step 800
800 (this color)
#175166
oklch(40.8% 0.068 226.5)
-
Step 900
900
#1F4757
oklch(37.6% 0.052 226.9)
-
Step 950
950
#132A33
oklch(27.1% 0.033 225.6)
#175166 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) | #464F67 | 0.051 |
| Deuteranopia (no green cones) | #3B4866 | 0.043 |
| Tritanopia (no blue cones) | #005758 | 0.037 |
| Achromatopsia (no color) | #4B4B4B | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175166
#175166
oklch(40.8% 0.068 226.5)
- #683E29
#683E29
oklch(40.9% 0.068 46.8)
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 #175166, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.040
- Charcoal #264653 ΔE 0.041
- Petrol #005F6A ΔE 0.043
- Dark Teal #014D4E ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.046
- Light Navy #155084 ΔE 0.052
Use #175166 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.