#18778A
Closest named color: Ocean (#017B92). oklch(52.6% 0.087 215.2), rgb(24, 119, 138).
Aa
White text reads best on this color (5.19:1).
About this color
#18778A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.087 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.015 away. White text reads best on it, at 5.19:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.04:1 |
| White text | 5.19:1 |
Values
| HEX | #18778A |
| RGB | rgb(24, 119, 138) |
| HSL | hsl(190, 70%, 32%) |
| OKLCH | oklch(52.6% 0.087 215.2) |
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 #18778A | 5.19:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #18778A | 4.04:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #18778A text on white | 5.19:1 | AA | Lc 75.3 | Fine for body text |
| #18778A text on black | 4.04:1 | AA large text | Lc -26.4 | 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 600.
-
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
#CADDE2
oklch(88.5% 0.022 215.3)
-
Step 300
300
#A5C8D0
oklch(81% 0.039 213.1)
-
Step 400
400
#72ABB9
oklch(70.7% 0.063 214.9)
-
Step 500
500
#4996A8
oklch(63.1% 0.08 215.1)
-
Step 600
600 (this color)
#18778A
oklch(52.6% 0.087 215.2)
-
Step 700
700
#156C7D
oklch(49.1% 0.081 214.7)
-
Step 800
800
#175866
oklch(42.7% 0.067 215.5)
-
Step 900
900
#1B4953
oklch(37.8% 0.052 214.4)
-
Step 950
950
#112B31
oklch(27.1% 0.034 214.8)
#18778A 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) | #6A738B | 0.077 |
| Deuteranopia (no green cones) | #5B688A | 0.070 |
| Tritanopia (no blue cones) | #007E7D | 0.035 |
| Achromatopsia (no color) | #6D6D6D | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18778A
#18778A
oklch(52.6% 0.087 215.2)
- #965848
#965848
oklch(52.7% 0.086 35.3)
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 #18778A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.015
- Deep Aqua #08787F ΔE 0.020
- Sea Blue #047495 ΔE 0.023
- Bluegreen #017A79 ΔE 0.033
- Teal #008080 ΔE 0.036
- Deep Turquoise #017374 ΔE 0.037
- Ocean Blue #03719C ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.041
Use #18778A 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.