#174740
Closest named color: Dark Teal (#014D4E). oklch(36.3% 0.053 182), rgb(23, 71, 64).
Aa
White text reads best on this color (10.43:1).
About this color
#174740 is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.053 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.026 away. White text reads best on it, at 10.43:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.01:1 |
| White text | 10.43:1 |
Values
| HEX | #174740 |
| RGB | rgb(23, 71, 64) |
| HSL | hsl(171, 51%, 18%) |
| OKLCH | oklch(36.3% 0.053 182) |
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 #174740 | 10.43:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #174740 | 2.01:1 | Fails | Lc 9.9 | Not readable |
| #174740 text on white | 10.43:1 | AAA | Lc 94.0 | Preferred for body text |
| #174740 text on black | 2.01:1 | Fails | Lc -8.5 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CADEDA
oklch(88.5% 0.022 182.5)
-
Step 300
300
#A5C9C2
oklch(80.8% 0.04 182.2)
-
Step 400
400
#73AEA3
oklch(70.7% 0.064 181.4)
-
Step 500
500
#4A9A8D
oklch(63.2% 0.081 181.6)
-
Step 600
600
#258477
oklch(55.6% 0.088 181.9)
-
Step 700
700
#157064
oklch(49.2% 0.082 181.5)
-
Step 800
800
#175B52
oklch(42.7% 0.068 182.3)
-
Step 900
900 (this color)
#174740
oklch(36.3% 0.053 182)
-
Step 950
950
#112C28
oklch(27% 0.034 182.9)
#174740 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) | #444340 | 0.057 |
| Deuteranopia (no green cones) | #3C3D41 | 0.054 |
| Tritanopia (no blue cones) | #004845 | 0.013 |
| Achromatopsia (no color) | #404040 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174740
#174740
oklch(36.3% 0.053 182)
- #55323C
#55323C
oklch(36.3% 0.053 1.5)
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 #174740, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.026
- Dark Blue Green #005249 ΔE 0.035
- Charcoal #264653 ΔE 0.039
- Evergreen #05472A ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.048
- Onyx #343A40 ΔE 0.052
- Deep Teal #00555A ΔE 0.053
Use #174740 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.