#175155
Closest named color: Deep Teal (#00555A). oklch(40% 0.058 201.7), rgb(23, 81, 85).
Aa
White text reads best on this color (8.95:1).
About this color
#175155 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.058 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.014 away. White text reads best on it, at 8.95:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #175155 |
| RGB | rgb(23, 81, 85) |
| HSL | hsl(184, 57%, 21%) |
| OKLCH | oklch(40% 0.058 201.7) |
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 #175155 | 8.95:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #175155 | 2.34:1 | Fails | Lc 13.7 | Not readable |
| #175155 text on white | 8.95:1 | AAA | Lc 90.3 | Preferred for body text |
| #175155 text on black | 2.34:1 | Fails | Lc -12.0 | 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
#E1EDED
oklch(93.7% 0.013 196.9)
-
Step 200
200
#C8DEE0
oklch(88.5% 0.024 203.4)
-
Step 300
300
#A0CACC
oklch(81% 0.044 199.9)
-
Step 400
400
#69AEB3
oklch(70.7% 0.07 201.6)
-
Step 500
500
#3899A0
oklch(63% 0.089 201.9)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900 (this color)
#175155
oklch(40% 0.058 201.7)
-
Step 950
950
#0C2C2E
oklch(27.1% 0.037 201)
#175155 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) | #4A4D55 | 0.058 |
| Deuteranopia (no green cones) | #414655 | 0.055 |
| Tritanopia (no blue cones) | #005452 | 0.015 |
| Achromatopsia (no color) | #494949 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175155
#175155
oklch(40% 0.058 201.7)
- #643B3A
#643B3A
oklch(40.1% 0.058 21.5)
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 #175155, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.014
- Dark Teal #014D4E ΔE 0.021
- Dark Slate Gray #2F4F4F ΔE 0.021
- Dark Blue Green #005249 ΔE 0.026
- Charcoal #264653 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.042
- Petrol #005F6A ΔE 0.048
- Charcoal Grey #3C4142 ΔE 0.059
Use #175155 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.