#19666C
Closest named color: Dark Aqua (#05696B). oklch(46.8% 0.072 202.8), rgb(25, 102, 108).
Aa
White text reads best on this color (6.64:1).
About this color
#19666C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.072 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.012 away. White text reads best on it, at 6.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #19666C |
| RGB | rgb(25, 102, 108) |
| HSL | hsl(184, 62%, 26%) |
| OKLCH | oklch(46.8% 0.072 202.8) |
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 #19666C | 6.64:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #19666C | 3.15:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #19666C text on white | 6.64:1 | AA | Lc 82.5 | Fine for body text |
| #19666C text on black | 3.15:1 | AA large text | Lc -19.4 | 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 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A7C8CA
oklch(80.9% 0.035 201)
-
Step 400
400
#77ABB0
oklch(70.7% 0.055 203.5)
-
Step 500
500
#51969C
oklch(63% 0.07 202.9)
-
Step 600
600
#308187
oklch(55.7% 0.078 202.1)
-
Step 700
700 (this color)
#19666C
oklch(46.8% 0.072 202.8)
-
Step 800
800
#1F585D
oklch(42.6% 0.059 203.3)
-
Step 900
900
#20494C
oklch(37.7% 0.046 201.8)
-
Step 950
950
#142B2D
oklch(27.1% 0.029 202.9)
#19666C 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) | #5D616C | 0.071 |
| Deuteranopia (no green cones) | #52596C | 0.066 |
| Tritanopia (no blue cones) | #006A68 | 0.018 |
| Achromatopsia (no color) | #5C5C5C | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19666C
#19666C
oklch(46.8% 0.072 202.8)
- #7E4A47
#7E4A47
oklch(46.9% 0.071 23.7)
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 #19666C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.012
- Petrol #005F6A ΔE 0.026
- Dark Green Blue #1F6357 ΔE 0.033
- Deep Turquoise #017374 ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.039
- Slate #516572 ΔE 0.056
- Deep Aqua #08787F ΔE 0.056
- YInMn Blue #415A77 ΔE 0.056
Use #19666C 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.