#175D5C
Closest named color: Petrol (#005F6A). oklch(43.7% 0.067 193.6), rgb(23, 93, 92).
Aa
White text reads best on this color (7.61:1).
About this color
#175D5C is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.067 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.022 away. White text reads best on it, at 7.61:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.75:1 |
| White text | 7.61:1 |
Values
| HEX | #175D5C |
| RGB | rgb(23, 93, 92) |
| HSL | hsl(179, 60%, 23%) |
| OKLCH | oklch(43.7% 0.067 193.6) |
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 #175D5C | 7.61:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #175D5C | 2.75:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #175D5C text on white | 7.61:1 | AAA | Lc 86.2 | Fine for body text |
| #175D5C text on black | 2.75:1 | Fails | Lc -15.9 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDD
oklch(88.5% 0.021 193.1)
-
Step 300
300
#A4C9C8
oklch(80.9% 0.039 194.4)
-
Step 400
400
#71ADAC
oklch(70.6% 0.062 194.5)
-
Step 500
500
#479997
oklch(63.2% 0.08 193.2)
-
Step 600
600
#208382
oklch(55.6% 0.087 193.9)
-
Step 700
700
#0F6F6E
oklch(49.2% 0.081 193.7)
-
Step 800
800 (this color)
#175D5C
oklch(43.7% 0.067 193.6)
-
Step 900
900
#194A49
oklch(37.6% 0.052 193.3)
-
Step 950
950
#112C2B
oklch(27.2% 0.033 192.2)
#175D5C 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) | #57585C | 0.070 |
| Deuteranopia (no green cones) | #4C505D | 0.066 |
| Tritanopia (no blue cones) | #00605D | 0.011 |
| Achromatopsia (no color) | #545454 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175D5C
#175D5C
oklch(43.7% 0.067 193.6)
- #724247
#724247
oklch(43.8% 0.067 13.5)
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 #175D5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.022
- Dark Green Blue #1F6357 ΔE 0.025
- Deep Teal #00555A ΔE 0.029
- Dark Aqua #05696B ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.044
- Dark Blue Green #005249 ΔE 0.045
- Dark Teal #014D4E ΔE 0.056
- Spruce #0A5F38 ΔE 0.062
Use #175D5C 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.