#19AAC4
Closest named color: Turquoise Blue (#06B1C4). oklch(68% 0.116 214.3), rgb(25, 170, 196).
Aa
Black text reads best on this color (7.58:1).
About this color
#19AAC4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 68%, its chroma 0.116 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.020 away. Black text reads best on it, at 7.58:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.58:1 |
| White text | 2.76:1 |
Values
| HEX | #19AAC4 |
| RGB | rgb(25, 170, 196) |
| HSL | hsl(189, 77%, 43%) |
| OKLCH | oklch(68% 0.116 214.3) |
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 #19AAC4 | 2.76:1 | Fails | Lc -58.1 | Large or bold text, headings |
| Black text on #19AAC4 | 7.58:1 | AAA | Lc 51.1 | Large or bold text, headings |
| #19AAC4 text on white | 2.76:1 | Fails | Lc 52.9 | Large or bold text, headings |
| #19AAC4 text on black | 7.58:1 | AAA | Lc -49.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF7F9
oklch(97.1% 0.009 214.3)
-
Step 100
100
#DBEEF2
oklch(93.6% 0.021 211.8)
-
Step 200
200
#BCE1EA
oklch(88.6% 0.041 214.1)
-
Step 300
300
#89CDDD
oklch(80.9% 0.072 214.1)
-
Step 400
400 (this color)
#19AAC4
oklch(68% 0.116 214.3)
-
Step 500
500
#009AB3
oklch(63.1% 0.111 214.6)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#19AAC4 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) | #97A4C5 | 0.103 |
| Deuteranopia (no green cones) | #8295C4 | 0.093 |
| Tritanopia (no blue cones) | #00B4B2 | 0.046 |
| Achromatopsia (no color) | #9B9B9B | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19AAC4
#19AAC4
oklch(68% 0.116 214.3)
- #D67D67
#D67D67
oklch(68.1% 0.116 34.8)
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 #19AAC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.020
- Light Sea Green #20B2AA ΔE 0.052
- Cadet Blue #5F9EA0 ΔE 0.061
- Greyblue #77A1B5 ΔE 0.065
- Topaz #13BBAF ΔE 0.067
- Sea #3C9992 ΔE 0.076
- Persian Green #2A9D8F ΔE 0.078
- Dull Teal #5F9E8F ΔE 0.079
Use #19AAC4 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.