#175A53
Closest named color: Deep Teal (#00555A). oklch(42.5% 0.066 184.9), rgb(23, 90, 83).
Aa
White text reads best on this color (8.00:1).
About this color
#175A53 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.066 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.026 away. White text reads best on it, at 8.00:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #175A53 |
| RGB | rgb(23, 90, 83) |
| HSL | hsl(174, 59%, 22%) |
| OKLCH | oklch(42.5% 0.066 184.9) |
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 #175A53 | 8.00:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #175A53 | 2.62:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #175A53 text on white | 8.00:1 | AAA | Lc 87.5 | Fine for body text |
| #175A53 text on black | 2.62:1 | Fails | Lc -14.7 | 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 800.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDB
oklch(88.5% 0.022 186)
-
Step 300
300
#A6C9C4
oklch(80.9% 0.038 185.9)
-
Step 400
400
#73AEA5
oklch(70.8% 0.063 183.9)
-
Step 500
500
#4B9990
oklch(63.1% 0.078 185.5)
-
Step 600
600
#27837A
oklch(55.5% 0.085 185.6)
-
Step 700
700
#176F67
oklch(49.1% 0.08 185.7)
-
Step 800
800 (this color)
#175A53
oklch(42.5% 0.066 184.9)
-
Step 900
900
#1C4A45
oklch(37.6% 0.051 185.6)
-
Step 950
950
#122C28
oklch(27.1% 0.033 182.6)
#175A53 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) | #555553 | 0.070 |
| Deuteranopia (no green cones) | #4C4E54 | 0.066 |
| Tritanopia (no blue cones) | #005C58 | 0.010 |
| Achromatopsia (no color) | #505050 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175A53
#175A53
oklch(42.5% 0.066 184.9)
- #6D3E49
#6D3E49
oklch(42.4% 0.067 5.2)
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 #175A53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.026
- Dark Green Blue #1F6357 ΔE 0.030
- Dark Blue Green #005249 ΔE 0.032
- Petrol #005F6A ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.037
- Dark Teal #014D4E ΔE 0.046
- Spruce #0A5F38 ΔE 0.052
- Dark Aqua #05696B ΔE 0.052
Use #175A53 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.