#174F3F
Closest named color: Dark Blue Green (#005249). oklch(38.6% 0.064 170.5), rgb(23, 79, 63).
Aa
White text reads best on this color (9.43:1).
About this color
#174F3F is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.064 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.017 away. White text reads best on it, at 9.43:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.22:1 |
| White text | 9.43:1 |
Values
| HEX | #174F3F |
| RGB | rgb(23, 79, 63) |
| HSL | hsl(163, 55%, 20%) |
| OKLCH | oklch(38.6% 0.064 170.5) |
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 #174F3F | 9.43:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #174F3F | 2.22:1 | Fails | Lc 12.4 | Not readable |
| #174F3F text on white | 9.43:1 | AAA | Lc 91.6 | Preferred for body text |
| #174F3F text on black | 2.22:1 | Fails | Lc -10.8 | 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 900.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE8
oklch(93.6% 0.014 169.2)
-
Step 200
200
#C9DFD6
oklch(88.5% 0.026 169.2)
-
Step 300
300
#A2CBBC
oklch(80.8% 0.048 170.8)
-
Step 400
400
#6DB09A
oklch(70.6% 0.076 171.2)
-
Step 500
500
#3F9D81
oklch(63.2% 0.099 170.4)
-
Step 600
600
#0C876A
oklch(55.6% 0.107 170.4)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#055D48
oklch(42.6% 0.082 170.2)
-
Step 900
900 (this color)
#174F3F
oklch(38.6% 0.064 170.5)
-
Step 950
950
#0E2D24
oklch(27.1% 0.041 171.3)
#174F3F 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) | #4D493E | 0.067 |
| Deuteranopia (no green cones) | #454440 | 0.063 |
| Tritanopia (no blue cones) | #00504A | 0.019 |
| Achromatopsia (no color) | #464646 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174F3F
#174F3F
oklch(38.6% 0.064 170.5)
- #5E3549
#5E3549
oklch(38.7% 0.065 349.9)
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 #174F3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.017
- Dark Teal #014D4E ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.038
- Evergreen #05472A ΔE 0.041
- Deep Teal #00555A ΔE 0.043
- Pine Green #0A481E ΔE 0.052
- Charcoal #264653 ΔE 0.055
- Spruce #0A5F38 ΔE 0.058
Use #174F3F 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.