#18778C
Closest named color: Ocean (#017B92). oklch(52.7% 0.088 217.1), rgb(24, 119, 140).
Aa
White text reads best on this color (5.17:1).
About this color
#18778C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.088 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.013 away. White text reads best on it, at 5.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.05:1 |
| White text | 5.17:1 |
Values
| HEX | #18778C |
| RGB | rgb(24, 119, 140) |
| HSL | hsl(191, 71%, 32%) |
| OKLCH | oklch(52.7% 0.088 217.1) |
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 #18778C | 5.17:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #18778C | 4.05:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #18778C text on white | 5.17:1 | AA | Lc 75.3 | Fine for body text |
| #18778C text on black | 4.05:1 | AA large text | Lc -26.5 | 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
#CADDE3
oklch(88.5% 0.022 218.6)
-
Step 300
300
#A5C7D1
oklch(80.8% 0.039 217.5)
-
Step 400
400
#72ABBA
oklch(70.7% 0.063 216.1)
-
Step 500
500
#4996A9
oklch(63.2% 0.081 216.1)
-
Step 600
600 (this color)
#18778C
oklch(52.7% 0.088 217.1)
-
Step 700
700
#156C7F
oklch(49.2% 0.082 216.8)
-
Step 800
800
#165867
oklch(42.7% 0.068 216.6)
-
Step 900
900
#1B4854
oklch(37.6% 0.053 218.2)
-
Step 950
950
#112A31
oklch(26.8% 0.033 218.4)
#18778C 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) | #69738D | 0.076 |
| Deuteranopia (no green cones) | #5A688C | 0.069 |
| Tritanopia (no blue cones) | #007E7E | 0.036 |
| Achromatopsia (no color) | #6D6D6D | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18778C
#18778C
oklch(52.7% 0.088 217.1)
- #965846
#965846
oklch(52.7% 0.087 37)
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 #18778C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.013
- Sea Blue #047495 ΔE 0.020
- Deep Aqua #08787F ΔE 0.023
- Bluegreen #017A79 ΔE 0.036
- Ocean Blue #03719C ΔE 0.036
- Teal #008080 ΔE 0.039
- Deep Turquoise #017374 ΔE 0.040
- Metallic Blue #4F738E ΔE 0.044
Use #18778C 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.