#18768F
Closest named color: Sea Blue (#047495). oklch(52.6% 0.09 221), rgb(24, 118, 143).
Aa
White text reads best on this color (5.21:1).
About this color
#18768F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.090 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.014 away. White text reads best on it, at 5.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #18768F |
| RGB | rgb(24, 118, 143) |
| HSL | hsl(193, 71%, 33%) |
| OKLCH | oklch(52.6% 0.09 221) |
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 #18768F | 5.21:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #18768F | 4.02:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #18768F text on white | 5.21:1 | AA | Lc 75.5 | Fine for body text |
| #18768F text on black | 4.02:1 | AA large text | Lc -26.3 | 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
#CADDE4
oklch(88.5% 0.023 221.8)
-
Step 300
300
#A5C7D3
oklch(80.9% 0.04 221.2)
-
Step 400
400
#72AABD
oklch(70.6% 0.065 221.3)
-
Step 500
500
#4995AD
oklch(63.1% 0.083 221.2)
-
Step 600
600 (this color)
#18768F
oklch(52.6% 0.09 221)
-
Step 700
700
#166B82
oklch(49.1% 0.083 221.2)
-
Step 800
800
#17576A
oklch(42.6% 0.069 222.1)
-
Step 900
900
#1B4856
oklch(37.7% 0.054 221.6)
-
Step 950
950
#112A32
oklch(26.9% 0.034 221.3)
#18768F 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) | #677390 | 0.073 |
| Deuteranopia (no green cones) | #58688F | 0.065 |
| Tritanopia (no blue cones) | #007E7E | 0.043 |
| Achromatopsia (no color) | #6C6C6C | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18768F
#18768F
oklch(52.6% 0.09 221)
- #965841
#965841
oklch(52.6% 0.089 41)
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 #18768F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.014
- Ocean #017B92 ΔE 0.015
- Deep Aqua #08787F ΔE 0.029
- Ocean Blue #03719C ΔE 0.030
- Muted Blue #3B719F ΔE 0.041
- Bluegreen #017A79 ΔE 0.042
- Metallic Blue #4F738E ΔE 0.042
- Cerulean #457B9D ΔE 0.044
Use #18768F 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.