#188E83
Closest named color: Dark Cyan (#008B8B). oklch(58.4% 0.098 185), rgb(24, 142, 131).
Aa
Black text reads best on this color (5.23:1).
About this color
#188E83 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.098 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.018 away. Black text reads best on it, at 5.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.23:1 |
| White text | 4.01:1 |
Values
| HEX | #188E83 |
| RGB | rgb(24, 142, 131) |
| HSL | hsl(174, 71%, 33%) |
| OKLCH | oklch(58.4% 0.098 185) |
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 #188E83 | 4.01:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #188E83 | 5.23:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #188E83 text on white | 4.01:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #188E83 text on black | 5.23:1 | AA | Lc -34.7 | 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
#C8DFDB
oklch(88.5% 0.025 184.2)
-
Step 300
300
#A2CAC4
oklch(80.8% 0.043 185.2)
-
Step 400
400
#6BAFA6
oklch(70.6% 0.071 185.1)
-
Step 500
500
#3C9B90
oklch(63% 0.09 184.7)
-
Step 600
600 (this color)
#188E83
oklch(58.4% 0.098 185)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#124C46
oklch(37.8% 0.059 185)
-
Step 950
950
#0D2C29
oklch(26.9% 0.037 186.6)
#188E83 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) | #868583 | 0.104 |
| Deuteranopia (no green cones) | #777A84 | 0.099 |
| Tritanopia (no blue cones) | #00918A | 0.011 |
| Achromatopsia (no color) | #7F7F7F | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #188E83
#188E83
oklch(58.4% 0.098 185)
- #AC6274
#AC6274
oklch(58.5% 0.098 4.9)
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 #188E83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.018
- Teal Green #0A9396 ΔE 0.028
- Dusty Teal #4C9085 ΔE 0.034
- Blue Green #0F9B8E ΔE 0.038
- Sea #3C9992 ΔE 0.044
- Teal #008080 ΔE 0.044
- Viridian #1E9167 ΔE 0.046
- Persian Green #2A9D8F ΔE 0.047
Use #188E83 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.