#175D6B
Closest named color: Petrol (#005F6A). oklch(44.3% 0.07 214.3), rgb(23, 93, 107).
Aa
White text reads best on this color (7.46:1).
About this color
#175D6B is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.070 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.010 away. White text reads best on it, at 7.46:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.81:1 |
| White text | 7.46:1 |
Values
| HEX | #175D6B |
| RGB | rgb(23, 93, 107) |
| HSL | hsl(190, 65%, 25%) |
| OKLCH | oklch(44.3% 0.07 214.3) |
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 #175D6B | 7.46:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #175D6B | 2.81:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #175D6B text on white | 7.46:1 | AAA | Lc 85.6 | Fine for body text |
| #175D6B 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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A4C8D1
oklch(81% 0.04 214.6)
-
Step 400
400
#70ABBA
oklch(70.6% 0.065 215.5)
-
Step 500
500
#4596A8
oklch(63% 0.083 214.4)
-
Step 600
600
#1C8194
oklch(55.7% 0.091 213.9)
-
Step 700
700
#096C7E
oklch(49% 0.084 214.9)
-
Step 800
800 (this color)
#175D6B
oklch(44.3% 0.07 214.3)
-
Step 900
900
#184953
oklch(37.7% 0.054 213.6)
-
Step 950
950
#102B31
oklch(27.1% 0.034 214.3)
#175D6B 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) | #535A6C | 0.063 |
| Deuteranopia (no green cones) | #47516B | 0.057 |
| Tritanopia (no blue cones) | #006261 | 0.028 |
| Achromatopsia (no color) | #555555 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175D6B
#175D6B
oklch(44.3% 0.07 214.3)
- #754539
#754539
oklch(44.4% 0.07 34.8)
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 #175D6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.010
- Deep Teal #00555A ΔE 0.037
- Dark Aqua #05696B ΔE 0.038
- Dark Green Blue #1F6357 ΔE 0.044
- YInMn Blue #415A77 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.056
Use #175D6B 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.