#187381
Closest named color: Deep Aqua (#08787F). oklch(51.2% 0.082 210.6), rgb(24, 115, 129).
Aa
White text reads best on this color (5.51:1).
About this color
#187381 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.082 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.017 away. White text reads best on it, at 5.51:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #187381 |
| RGB | rgb(24, 115, 129) |
| HSL | hsl(188, 69%, 30%) |
| OKLCH | oklch(51.2% 0.082 210.6) |
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 #187381 | 5.51:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #187381 | 3.80:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #187381 text on white | 5.51:1 | AA | Lc 77.2 | Fine for body text |
| #187381 text on black | 3.80:1 | AA large text | Lc -24.6 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE1
oklch(88.4% 0.022 211)
-
Step 300
300
#A4C8CF
oklch(80.9% 0.04 210.7)
-
Step 400
400
#70ACB7
oklch(70.7% 0.064 210.3)
-
Step 500
500
#4697A5
oklch(63.2% 0.081 210.4)
-
Step 600
600
#1E8190
oklch(55.6% 0.088 210.3)
-
Step 700
700 (this color)
#187381
oklch(51.2% 0.082 210.6)
-
Step 800
800
#115964
oklch(42.8% 0.068 210.5)
-
Step 900
900
#194951
oklch(37.7% 0.053 210.3)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#187381 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) | #676F82 | 0.076 |
| Deuteranopia (no green cones) | #596481 | 0.070 |
| Tritanopia (no blue cones) | #007977 | 0.029 |
| Achromatopsia (no color) | #696969 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #187381
#187381
oklch(51.2% 0.082 210.6)
- #90544A
#90544A
oklch(51.3% 0.082 30.3)
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 #187381, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.017
- Deep Turquoise #017374 ΔE 0.023
- Dark Aquamarine #017371 ΔE 0.028
- Bluegreen #017A79 ΔE 0.029
- Ocean #017B92 ΔE 0.031
- Sea Blue #047495 ΔE 0.032
- Teal #008080 ΔE 0.041
- Dark Aqua #05696B ΔE 0.043
Use #187381 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.