#18708F
Closest named color: Sea Blue (#047495). oklch(51.1% 0.092 227.5), rgb(24, 112, 143).
Aa
White text reads best on this color (5.59:1).
About this color
#18708F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.092 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.013 away. White text reads best on it, at 5.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #18708F |
| RGB | rgb(24, 112, 143) |
| HSL | hsl(196, 71%, 33%) |
| OKLCH | oklch(51.1% 0.092 227.5) |
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 #18708F | 5.59:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #18708F | 3.75:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #18708F text on white | 5.59:1 | AA | Lc 77.6 | Fine for body text |
| #18708F 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A4C7D7
oklch(80.9% 0.044 227.3)
-
Step 400
400
#70AAC3
oklch(70.7% 0.071 227)
-
Step 500
500
#4594B4
oklch(63% 0.091 227.4)
-
Step 600
600
#1F7EA0
oklch(55.6% 0.098 227.5)
-
Step 700
700 (this color)
#18708F
oklch(51.1% 0.092 227.5)
-
Step 800
800
#12576F
oklch(42.8% 0.075 226.9)
-
Step 900
900
#19485A
oklch(37.8% 0.059 226.9)
-
Step 950
950
#102A35
oklch(27% 0.038 228.2)
#18708F 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) | #5F6E91 | 0.066 |
| Deuteranopia (no green cones) | #50638F | 0.057 |
| Tritanopia (no blue cones) | #00797A | 0.051 |
| Achromatopsia (no color) | #686868 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18708F
#18708F
oklch(51.1% 0.092 227.5)
- #905535
#905535
oklch(51% 0.091 48.3)
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 #18708F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.013
- Ocean Blue #03719C ΔE 0.021
- Ocean #017B92 ΔE 0.032
- Peacock Blue #016795 ΔE 0.033
- Muted Blue #3B719F ΔE 0.037
- Deep Aqua #08787F ΔE 0.041
- Denim #3B638C ΔE 0.042
- Metallic Blue #4F738E ΔE 0.047
Use #18708F 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.