#19B5A0
Closest named color: Greeny Blue (#42B395). oklch(69.5% 0.122 180.3), rgb(25, 181, 160).
Aa
Black text reads best on this color (8.15:1).
About this color
#19B5A0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.122 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.019 away. Black text reads best on it, at 8.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.15:1 |
| White text | 2.57:1 |
Values
| HEX | #19B5A0 |
| RGB | rgb(25, 181, 160) |
| HSL | hsl(172, 76%, 40%) |
| OKLCH | oklch(69.5% 0.122 180.3) |
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 #19B5A0 | 2.57:1 | Fails | Lc -54.9 | Large or bold text, headings |
| Black text on #19B5A0 | 8.15:1 | AAA | Lc 54.2 | Large or bold text, headings |
| #19B5A0 text on white | 2.57:1 | Fails | Lc 49.8 | Large or bold text, headings |
| #19B5A0 text on black | 8.15:1 | AAA | Lc -52.1 | 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
#EFF8F6
oklch(97.2% 0.01 181.4)
-
Step 100
100
#DBEFEA
oklch(93.6% 0.022 179.2)
-
Step 200
200
#BCE3DA
oklch(88.5% 0.043 179.7)
-
Step 300
300
#88D1C3
oklch(80.9% 0.076 180.9)
-
Step 400
400 (this color)
#19B5A0
oklch(69.5% 0.122 180.3)
-
Step 500
500
#009F8C
oklch(63% 0.114 180.3)
-
Step 600
600
#008676
oklch(55.6% 0.1 180.5)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D43
oklch(37.7% 0.068 180.3)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#19B5A0 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) | #ADA99F | 0.130 |
| Deuteranopia (no green cones) | #9A9CA2 | 0.122 |
| Tritanopia (no blue cones) | #00B8AF | 0.021 |
| Achromatopsia (no color) | #A1A1A1 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19B5A0
#19B5A0
oklch(69.5% 0.122 180.3)
- #DA7B99
#DA7B99
oklch(69.5% 0.122 0.5)
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 #19B5A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.019
- Light Sea Green #20B2AA ΔE 0.020
- Topaz #13BBAF ΔE 0.024
- Green Blue #01C08D ΔE 0.049
- Bluey Green #2BB179 ΔE 0.052
- Dark Seafoam #1FB57A ΔE 0.054
- Dark Seafoam Green #3EAF76 ΔE 0.055
- Tea #65AB7C ΔE 0.057
Use #19B5A0 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.