#174D5C
Closest named color: Charcoal (#264653). oklch(39.2% 0.06 220), rgb(23, 77, 92).
Aa
White text reads best on this color (9.32:1).
About this color
#174D5C is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.060 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.024 away. White text reads best on it, at 9.32:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.25:1 |
| White text | 9.32:1 |
Values
| HEX | #174D5C |
| RGB | rgb(23, 77, 92) |
| HSL | hsl(193, 60%, 23%) |
| OKLCH | oklch(39.2% 0.06 220) |
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 #174D5C | 9.32:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #174D5C | 2.25:1 | Fails | Lc 12.7 | Not readable |
| #174D5C text on white | 9.32:1 | AAA | Lc 91.3 | Preferred for body text |
| #174D5C text on black | 2.25:1 | Fails | Lc -11.1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A1C8D5
oklch(80.9% 0.045 220.1)
-
Step 400
400
#6BACC0
oklch(70.8% 0.072 219.5)
-
Step 500
500
#3C96B0
oklch(63% 0.093 220.3)
-
Step 600
600
#03809C
oklch(55.5% 0.101 220.4)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#01586C
oklch(42.6% 0.077 220.3)
-
Step 900
900 (this color)
#174D5C
oklch(39.2% 0.06 220)
-
Step 950
950
#0D2B33
oklch(27.1% 0.038 218.3)
#174D5C 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) | #444B5D | 0.051 |
| Deuteranopia (no green cones) | #3A445C | 0.044 |
| Tritanopia (no blue cones) | #005252 | 0.029 |
| Achromatopsia (no color) | #474747 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174D5C
#174D5C
oklch(39.2% 0.06 220)
- #613A2C
#613A2C
oklch(39.2% 0.06 40.5)
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 #174D5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.024
- Dark Grey Blue #29465B ΔE 0.025
- Deep Teal #00555A ΔE 0.028
- Dark Teal #014D4E ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.032
- Dark Blue Green #005249 ΔE 0.043
- Petrol #005F6A ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.058
Use #174D5C 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.