#174240
Closest named color: Dark Teal (#014D4E). oklch(34.9% 0.047 191), rgb(23, 66, 64).
Aa
White text reads best on this color (11.11:1).
About this color
#174240 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.047 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.037 away. White text reads best on it, at 11.11:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 1.88:1 |
| White text | 11.11:1 |
Values
| HEX | #174240 |
| RGB | rgb(23, 66, 64) |
| HSL | hsl(177, 48%, 17%) |
| OKLCH | oklch(34.9% 0.047 191) |
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 #174240 | 11.11:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #174240 | 1.88:1 | Fails | Lc 8.4 | Not readable |
| #174240 text on white | 11.11:1 | AAA | Lc 95.5 | Preferred for body text |
| #174240 text on black | 1.88:1 | Fails | Lc 0.0 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDEDC
oklch(88.6% 0.02 189.2)
-
Step 300
300
#A7C8C6
oklch(80.8% 0.035 192)
-
Step 400
400
#77ACA9
oklch(70.7% 0.056 191.5)
-
Step 500
500
#509894
oklch(63.2% 0.073 190.8)
-
Step 600
600
#2F827E
oklch(55.6% 0.079 190.6)
-
Step 700
700
#216E6B
oklch(49.2% 0.073 191.3)
-
Step 800
800
#1E5A57
oklch(42.8% 0.061 190.5)
-
Step 900
900 (this color)
#174240
oklch(34.9% 0.047 191)
-
Step 950
950
#132B2A
oklch(26.9% 0.03 192)
#174240 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) | #3E3E40 | 0.050 |
| Deuteranopia (no green cones) | #373940 | 0.047 |
| Tritanopia (no blue cones) | #004441 | 0.013 |
| Achromatopsia (no color) | #3C3C3C | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174240
#174240
oklch(34.9% 0.047 191)
- #503034
#503034
oklch(35% 0.047 11.6)
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 #174240, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.037
- Charcoal #264653 ΔE 0.038
- Midnight Green #073B4C ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.039
- Onyx #343A40 ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.047
- Evergreen #05472A ΔE 0.048
- Dark Blue Green #005249 ΔE 0.051
Use #174240 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.