#2B7173
Closest named color: Deep Turquoise (#017374). oklch(50.6% 0.069 197.8), rgb(43, 113, 115).
Aa
White text reads best on this color (5.65:1).
About this color
#2B7173 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.069 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.017 away. White text reads best on it, at 5.65:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.71:1 |
| White text | 5.65:1 |
Values
| HEX | #2B7173 |
| RGB | rgb(43, 113, 115) |
| HSL | hsl(182, 46%, 31%) |
| OKLCH | oklch(50.6% 0.069 197.8) |
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 #2B7173 | 5.65:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #2B7173 | 3.71:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #2B7173 text on white | 5.65:1 | AA | Lc 78.1 | Fine for body text |
| #2B7173 text on black | 3.71:1 | AA large text | Lc -23.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDD
oklch(88.5% 0.018 196.8)
-
Step 300
300
#A9C8C8
oklch(81% 0.033 196.5)
-
Step 400
400
#79ABAC
oklch(70.6% 0.053 197.6)
-
Step 500
500
#539698
oklch(63% 0.068 198.1)
-
Step 600
600
#348183
oklch(55.7% 0.075 197.6)
-
Step 700
700 (this color)
#2B7173
oklch(50.6% 0.069 197.8)
-
Step 800
800
#22595A
oklch(42.8% 0.057 196.9)
-
Step 900
900
#21494A
oklch(37.7% 0.045 197.6)
-
Step 950
950
#152B2B
oklch(27.1% 0.028 195.6)
#2B7173 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) | #696C73 | 0.071 |
| Deuteranopia (no green cones) | #5E6373 | 0.067 |
| Tritanopia (no blue cones) | #007571 | 0.021 |
| Achromatopsia (no color) | #676767 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B7173
#2B7173
oklch(50.6% 0.069 197.8)
- #885456
#885456
oklch(50.5% 0.07 17.3)
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 #2B7173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.017
- Dark Aquamarine #017371 ΔE 0.019
- Deep Aqua #08787F ΔE 0.025
- Bluegreen #017A79 ΔE 0.028
- Dark Aqua #05696B ΔE 0.034
- Teal #008080 ΔE 0.044
- Ocean #017B92 ΔE 0.049
- Slate #516572 ΔE 0.050
Use #2B7173 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.