#187188
Closest named color: Sea Blue (#047495). oklch(51% 0.086 220.1), rgb(24, 113, 136).
Aa
White text reads best on this color (5.59:1).
About this color
#187188 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.086 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.020 away. White text reads best on it, at 5.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #187188 |
| RGB | rgb(24, 113, 136) |
| HSL | hsl(192, 70%, 31%) |
| OKLCH | oklch(51% 0.086 220.1) |
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 #187188 | 5.59:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #187188 | 3.75:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #187188 text on white | 5.59:1 | AA | Lc 77.6 | Fine for body text |
| #187188 text on black | 3.75:1 | AA large text | Lc -24.2 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A4C7D3
oklch(80.8% 0.041 220.6)
-
Step 400
400
#70ABBD
oklch(70.7% 0.067 219.1)
-
Step 500
500
#4695AD
oklch(63% 0.085 220.6)
-
Step 600
600
#1F7F99
oklch(55.5% 0.093 220.8)
-
Step 700
700 (this color)
#187188
oklch(51% 0.086 220.1)
-
Step 800
800
#12586A
oklch(42.8% 0.071 219.8)
-
Step 900
900
#194856
oklch(37.6% 0.055 220.9)
-
Step 950
950
#102A32
oklch(26.8% 0.035 220.6)
#187188 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) | #636E89 | 0.071 |
| Deuteranopia (no green cones) | #546388 | 0.063 |
| Tritanopia (no blue cones) | #007878 | 0.039 |
| Achromatopsia (no color) | #686868 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #187188
#187188
oklch(51% 0.086 220.1)
- #90543F
#90543F
oklch(51% 0.087 40)
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 #187188, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.020
- Deep Aqua #08787F ΔE 0.030
- Ocean #017B92 ΔE 0.030
- Ocean Blue #03719C ΔE 0.032
- Deep Turquoise #017374 ΔE 0.037
- Dark Aquamarine #017371 ΔE 0.042
- Bluegreen #017A79 ΔE 0.043
- Peacock Blue #016795 ΔE 0.043
Use #187188 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.