#178983
Closest named color: Dark Cyan (#008B8B). oklch(57.1% 0.094 189.2), rgb(23, 137, 131).
Aa
Black text reads best on this color (4.94:1).
About this color
#178983 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.094 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.012 away. Black text reads best on it, at 4.94:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.94:1 |
| White text | 4.24:1 |
Values
| HEX | #178983 |
| RGB | rgb(23, 137, 131) |
| HSL | hsl(177, 71%, 31%) |
| OKLCH | oklch(57.1% 0.094 189.2) |
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 #178983 | 4.24:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #178983 | 4.94:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #178983 text on white | 4.24:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #178983 text on black | 4.94:1 | AA | Lc -32.7 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C9DEDC
oklch(88.4% 0.023 189.8)
-
Step 300
300
#A2CAC6
oklch(80.9% 0.043 188.8)
-
Step 400
400
#6DAFA9
oklch(70.8% 0.068 188.4)
-
Step 500
500
#3F9A94
oklch(63% 0.086 189.2)
-
Step 600
600 (this color)
#178983
oklch(57.1% 0.094 189.2)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#055B57
oklch(42.6% 0.072 189.5)
-
Step 900
900
#144B48
oklch(37.7% 0.056 189.8)
-
Step 950
950
#0E2C2A
oklch(27% 0.036 189.3)
#178983 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) | #818183 | 0.100 |
| Deuteranopia (no green cones) | #727684 | 0.094 |
| Tritanopia (no blue cones) | #008D87 | 0.012 |
| Achromatopsia (no color) | #7B7B7B | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #178983
#178983
oklch(57.1% 0.094 189.2)
- #A75F6C
#A75F6C
oklch(57.1% 0.095 8.9)
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 #178983, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.012
- Teal #008080 ΔE 0.029
- Teal Green #0A9396 ΔE 0.035
- Dusty Teal #4C9085 ΔE 0.042
- Teal Blue #01889F ΔE 0.045
- Bluegreen #017A79 ΔE 0.047
- Blue Green #0F9B8E ΔE 0.053
- Deep Aqua #08787F ΔE 0.053
Use #178983 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.