#19CFA4
Closest named color: Emerald (#06D6A0). oklch(76.2% 0.147 170.4), rgb(25, 207, 164).
Aa
Black text reads best on this color (10.50:1).
About this color
#19CFA4 is a medium-light, vivid teal or cyan. In OKLCH its lightness is 76%, its chroma 0.147 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.023 away. Black text reads best on it, at 10.50:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.50:1 |
| White text | 1.99:1 |
Values
| HEX | #19CFA4 |
| RGB | rgb(25, 207, 164) |
| HSL | hsl(166, 78%, 45%) |
| OKLCH | oklch(76.2% 0.147 170.4) |
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 #19CFA4 | 1.99:1 | Fails | Lc -42.5 | Non-text elements, placeholder text |
| Black text on #19CFA4 | 10.50:1 | AAA | Lc 65.8 | Content text, not long reading |
| #19CFA4 text on white | 1.99:1 | Fails | Lc 38.1 | Non-text elements, placeholder text |
| #19CFA4 text on black | 10.50:1 | AAA | Lc -64.3 | Content text, not long reading |
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 300.
-
Step 50
50
#E9FAF3
oklch(97.1% 0.02 169.4)
-
Step 100
100
#CFF4E6
oklch(93.7% 0.043 170.5)
-
Step 200
200
#A2EBD1
oklch(88.5% 0.081 170.2)
-
Step 300
300 (this color)
#19CFA4
oklch(76.2% 0.147 170.4)
-
Step 400
400
#00BC94
oklch(70.8% 0.139 170.4)
-
Step 500
500
#00A17E
oklch(63.1% 0.125 170.2)
-
Step 600
600
#00876A
oklch(55.5% 0.109 170.8)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#004E3C
oklch(37.7% 0.074 170.6)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#19CFA4 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) | #C9C0A2 | 0.150 |
| Deuteranopia (no green cones) | #B4B1A7 | 0.144 |
| Tritanopia (no blue cones) | #00D1C3 | 0.043 |
| Achromatopsia (no color) | #B7B7B7 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19CFA4
#19CFA4
oklch(76.2% 0.147 170.4)
- #F688BE
#F688BE
oklch(76.2% 0.147 350.4)
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 #19CFA4, closest first.
No curated palette has a color within ΔE 0.04 of #19CFA4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.023
- Greenblue #23C48B ΔE 0.039
- Medium Aquamarine #66CDAA ΔE 0.040
- Green Blue #01C08D ΔE 0.047
- Seaweed #18D17B ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.062
- Seafoam Blue #78D1B6 ΔE 0.063
- Aqua Green #12E193 ΔE 0.063
Use #19CFA4 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.