#175F6A
Closest named color: Petrol (#005F6A). oklch(44.8% 0.07 210), rgb(23, 95, 106).
Aa
White text reads best on this color (7.28:1).
About this color
#175F6A is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.070 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.008 away. White text reads best on it, at 7.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.88:1 |
| White text | 7.28:1 |
Values
| HEX | #175F6A |
| RGB | rgb(23, 95, 106) |
| HSL | hsl(188, 64%, 25%) |
| OKLCH | oklch(44.8% 0.07 210) |
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 #175F6A | 7.28:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #175F6A | 2.88:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #175F6A text on white | 7.28:1 | AAA | Lc 85.0 | Fine for body text |
| #175F6A text on black | 2.88:1 | Fails | Lc -17.0 | 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
#F1F6F7
oklch(97% 0.005 211)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C9DEE1
oklch(88.6% 0.023 207.1)
-
Step 300
300
#A3C8CF
oklch(80.8% 0.041 210.4)
-
Step 400
400
#6FACB7
oklch(70.7% 0.065 210.1)
-
Step 500
500
#4397A5
oklch(63% 0.083 210)
-
Step 600
600
#198190
oklch(55.5% 0.09 209.9)
-
Step 700
700
#046D7B
oklch(49% 0.084 210.3)
-
Step 800
800 (this color)
#175F6A
oklch(44.8% 0.07 210)
-
Step 900
900
#174951
oklch(37.6% 0.054 209.9)
-
Step 950
950
#0F2B30
oklch(27% 0.035 210.9)
#175F6A 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) | #565B6B | 0.066 |
| Deuteranopia (no green cones) | #4A536A | 0.059 |
| Tritanopia (no blue cones) | #006462 | 0.025 |
| Achromatopsia (no color) | #565656 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175F6A
#175F6A
oklch(44.8% 0.07 210)
- #77453D
#77453D
oklch(44.8% 0.071 29.9)
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 #175F6A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.008
- Dark Aqua #05696B ΔE 0.032
- Dark Green Blue #1F6357 ΔE 0.038
- Deep Teal #00555A ΔE 0.040
- YInMn Blue #415A77 ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.060
- Deep Turquoise #017374 ΔE 0.061
Use #175F6A 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.