#174E51
Closest named color: Dark Teal (#014D4E). oklch(39% 0.056 200.3), rgb(23, 78, 81).
Aa
White text reads best on this color (9.35:1).
About this color
#174E51 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.056 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.013 away. White text reads best on it, at 9.35:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.24:1 |
| White text | 9.35:1 |
Values
| HEX | #174E51 |
| RGB | rgb(23, 78, 81) |
| HSL | hsl(183, 56%, 20%) |
| OKLCH | oklch(39% 0.056 200.3) |
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 #174E51 | 9.35:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #174E51 | 2.24:1 | Fails | Lc 12.6 | Not readable |
| #174E51 text on white | 9.35:1 | AAA | Lc 91.4 | Preferred for body text |
| #174E51 text on black | 2.24:1 | Fails | Lc -11.0 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C8DEDF
oklch(88.5% 0.024 200.1)
-
Step 300
300
#A2C9CB
oklch(80.8% 0.041 200.2)
-
Step 400
400
#6CAEB1
oklch(70.8% 0.067 199.4)
-
Step 500
500
#3D999E
oklch(63.1% 0.086 200.2)
-
Step 600
600
#058389
oklch(55.5% 0.093 200.5)
-
Step 700
700
#006F74
oklch(49.2% 0.084 200.3)
-
Step 800
800
#025B5F
oklch(42.9% 0.072 200.1)
-
Step 900
900 (this color)
#174E51
oklch(39% 0.056 200.3)
-
Step 950
950
#0D2C2D
oklch(27.1% 0.036 198.2)
#174E51 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) | #484A51 | 0.057 |
| Deuteranopia (no green cones) | #3F4451 | 0.052 |
| Tritanopia (no blue cones) | #00514F | 0.015 |
| Achromatopsia (no color) | #474747 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174E51
#174E51
oklch(39% 0.056 200.3)
- #603838
#603838
oklch(38.9% 0.057 20)
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 #174E51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.013
- Dark Slate Gray #2F4F4F ΔE 0.023
- Deep Teal #00555A ΔE 0.023
- Dark Blue Green #005249 ΔE 0.025
- Charcoal #264653 ΔE 0.029
- Dark Grey Blue #29465B ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.053
- Petrol #005F6A ΔE 0.059
Use #174E51 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.