#174A40
Closest named color: Dark Teal (#014D4E). oklch(37.2% 0.057 177.7), rgb(23, 74, 64).
Aa
White text reads best on this color (10.04:1).
About this color
#174A40 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.057 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.023 away. White text reads best on it, at 10.04:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.08:1 |
| White text | 10.04:1 |
Values
| HEX | #174A40 |
| RGB | rgb(23, 74, 64) |
| HSL | hsl(168, 53%, 19%) |
| OKLCH | oklch(37.2% 0.057 177.7) |
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 #174A40 | 10.04:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #174A40 | 2.08:1 | Fails | Lc 10.8 | Not readable |
| #174A40 text on white | 10.04:1 | AAA | Lc 93.1 | Preferred for body text |
| #174A40 text on black | 2.08:1 | Fails | Lc -9.4 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#CADFD9
oklch(88.6% 0.024 176.8)
-
Step 300
300
#A4CAC0
oklch(80.9% 0.043 177.4)
-
Step 400
400
#71AFA0
oklch(70.7% 0.068 177.3)
-
Step 500
500
#469B89
oklch(63.2% 0.087 177.4)
-
Step 600
600
#1E8573
oklch(55.6% 0.094 177.8)
-
Step 700
700
#0B7160
oklch(49.2% 0.088 177.1)
-
Step 800
800
#115C4F
oklch(42.8% 0.073 177.9)
-
Step 900
900 (this color)
#174A40
oklch(37.2% 0.057 177.7)
-
Step 950
950
#102C26
oklch(26.9% 0.036 177.5)
#174A40 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) | #474540 | 0.060 |
| Deuteranopia (no green cones) | #3F4041 | 0.056 |
| Tritanopia (no blue cones) | #004B47 | 0.014 |
| Achromatopsia (no color) | #424242 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174A40
#174A40
oklch(37.2% 0.057 177.7)
- #583340
#583340
oklch(37.1% 0.056 357.6)
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 #174A40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.023
- Dark Blue Green #005249 ΔE 0.026
- Evergreen #05472A ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.039
- Charcoal #264653 ΔE 0.043
- Deep Teal #00555A ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.051
- Pine Green #0A481E ΔE 0.054
Use #174A40 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.