#175D6A
Closest named color: Petrol (#005F6A). oklch(44.3% 0.069 213), rgb(23, 93, 106).
Aa
White text reads best on this color (7.47:1).
About this color
#175D6A is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.069 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.009 away. White text reads best on it, at 7.47:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.81:1 |
| White text | 7.47:1 |
Values
| HEX | #175D6A |
| RGB | rgb(23, 93, 106) |
| HSL | hsl(189, 64%, 25%) |
| OKLCH | oklch(44.3% 0.069 213) |
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 #175D6A | 7.47:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #175D6A | 2.81:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #175D6A text on white | 7.47:1 | AAA | Lc 85.7 | Fine for body text |
| #175D6A text on black | 2.81:1 | Fails | Lc -16.4 | 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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A4C8D0
oklch(80.9% 0.04 212.7)
-
Step 400
400
#70ACB9
oklch(70.8% 0.065 212.8)
-
Step 500
500
#4597A7
oklch(63.2% 0.083 212.3)
-
Step 600
600
#1D8193
oklch(55.7% 0.09 213.1)
-
Step 700
700
#0A6D7D
oklch(49.2% 0.084 212.7)
-
Step 800
800 (this color)
#175D6A
oklch(44.3% 0.069 213)
-
Step 900
900
#184953
oklch(37.7% 0.054 213.6)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#175D6A 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) | #535A6B | 0.063 |
| Deuteranopia (no green cones) | #48516A | 0.058 |
| Tritanopia (no blue cones) | #006261 | 0.027 |
| Achromatopsia (no color) | #555555 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175D6A
#175D6A
oklch(44.3% 0.069 213)
- #75443A
#75443A
oklch(44.2% 0.07 32.3)
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 #175D6A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.009
- Deep Teal #00555A ΔE 0.036
- Dark Aqua #05696B ΔE 0.038
- Dark Green Blue #1F6357 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.058
Use #175D6A 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.