#019D9F
Closest named color: Sea (#3C9992). oklch(63.1% 0.107 196.4), rgb(1, 157, 159).
Aa
Black text reads best on this color (6.32:1).
About this color
#019D9F is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.107 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.024 away. Black text reads best on it, at 6.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.32:1 |
| White text | 3.32:1 |
Values
| HEX | #019D9F |
| RGB | rgb(1, 157, 159) |
| HSL | hsl(181, 99%, 31%) |
| OKLCH | oklch(63.1% 0.107 196.4) |
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 #019D9F | 3.32:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #019D9F | 6.32:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #019D9F text on white | 3.32:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #019D9F text on black | 6.32:1 | AA | Lc -41.7 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DFEDED
oklch(93.6% 0.015 196.9)
-
Step 200
200
#C4E0DF
oklch(88.6% 0.03 194)
-
Step 300
300
#99CCCC
oklch(81% 0.053 196.2)
-
Step 400
400
#5AB1B2
oklch(70.7% 0.084 196.4)
-
Step 500
500 (this color)
#019D9F
oklch(63.1% 0.107 196.4)
-
Step 600
600
#008486
oklch(55.6% 0.095 196.7)
-
Step 700
700
#006F70
oklch(49.1% 0.084 195.9)
-
Step 800
800
#005B5C
oklch(42.7% 0.073 196.1)
-
Step 900
900
#004C4D
oklch(37.8% 0.064 196.3)
-
Step 950
950
#022D2E
oklch(27% 0.044 197.2)
#019D9F 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) | #91959F | 0.111 |
| Deuteranopia (no green cones) | #7F87A0 | 0.104 |
| Tritanopia (no blue cones) | #00A39D | 0.019 |
| Achromatopsia (no color) | #8D8D8D | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #019D9F
#019D9F
oklch(63.1% 0.107 196.4)
- #C26D73
#C26D73
oklch(63.2% 0.108 16.1)
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 #019D9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.024
- Blue Green #0F9B8E ΔE 0.025
- Persian Green #2A9D8F ΔE 0.025
- Teal Green #0A9396 ΔE 0.029
- Dusty Teal #4C9085 ΔE 0.049
- Cadet Blue #5F9EA0 ΔE 0.050
- Grey Teal #5E9B8A ΔE 0.052
- Dull Teal #5F9E8F ΔE 0.052
Use #019D9F 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.