#174D55
Closest named color: Dark Teal (#014D4E). oklch(38.9% 0.057 209), rgb(23, 77, 85).
Aa
White text reads best on this color (9.42:1).
About this color
#174D55 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.057 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.017 away. White text reads best on it, at 9.42:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.22:1 |
| White text | 9.42:1 |
Values
| HEX | #174D55 |
| RGB | rgb(23, 77, 85) |
| HSL | hsl(188, 57%, 21%) |
| OKLCH | oklch(38.9% 0.057 209) |
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 #174D55 | 9.42:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #174D55 | 2.22:1 | Fails | Lc 12.4 | Not readable |
| #174D55 text on white | 9.42:1 | AAA | Lc 91.5 | Preferred for body text |
| #174D55 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C8DEE1
oklch(88.5% 0.024 206.6)
-
Step 300
300
#A2C9CF
oklch(81% 0.042 207.8)
-
Step 400
400
#6CADB7
oklch(70.8% 0.068 208.1)
-
Step 500
500
#3E98A6
oklch(63.2% 0.087 209.3)
-
Step 600
600
#088291
oklch(55.6% 0.094 209.1)
-
Step 700
700
#006D7A
oklch(49% 0.084 209.1)
-
Step 800
800
#035A64
oklch(42.8% 0.073 208)
-
Step 900
900 (this color)
#174D55
oklch(38.9% 0.057 209)
-
Step 950
950
#0E2B30
oklch(27% 0.036 210.5)
#174D55 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) | #464A56 | 0.055 |
| Deuteranopia (no green cones) | #3D4355 | 0.050 |
| Tritanopia (no blue cones) | #00514F | 0.022 |
| Achromatopsia (no color) | #464646 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174D55
#174D55
oklch(38.9% 0.057 209)
- #603933
#603933
oklch(39% 0.057 29.3)
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 #174D55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.017
- Charcoal #264653 ΔE 0.024
- Deep Teal #00555A ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.031
- Dark Blue Green #005249 ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.058
Use #174D55 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.