#1BC199
Closest named color: Green Blue (#01C08D). oklch(72.4% 0.138 170.4), rgb(27, 193, 153).
Aa
Black text reads best on this color (9.13:1).
About this color
#1BC199 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.138 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.018 away. Black text reads best on it, at 9.13:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Green Blue (#01C08D) |
| Black text | 9.13:1 |
| White text | 2.29:1 |
Values
| HEX | #1BC199 |
| RGB | rgb(27, 193, 153) |
| HSL | hsl(166, 75%, 43%) |
| OKLCH | oklch(72.4% 0.138 170.4) |
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 #1BC199 | 2.29:1 | Fails | Lc -49.6 | Large or bold text, headings |
| Black text on #1BC199 | 9.13:1 | AAA | Lc 59.2 | Large or bold text, headings |
| #1BC199 text on white | 2.29:1 | Fails | Lc 44.8 | Non-text elements, placeholder text |
| #1BC199 text on black | 9.13:1 | AAA | Lc -57.3 | 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
#EEF8F4
oklch(97.1% 0.012 170.3)
-
Step 100
100
#DAF0E7
oklch(93.6% 0.026 169.3)
-
Step 200
200
#BBE4D4
oklch(88.5% 0.048 169.5)
-
Step 300
300
#85D3B8
oklch(80.9% 0.087 170.1)
-
Step 400
400 (this color)
#1BC199
oklch(72.4% 0.138 170.4)
-
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)
#1BC199 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) | #BBB397 | 0.141 |
| Deuteranopia (no green cones) | #A8A59C | 0.136 |
| Tritanopia (no blue cones) | #00C2B6 | 0.041 |
| Achromatopsia (no color) | #ABABAB | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BC199
#1BC199
oklch(72.4% 0.138 170.4)
- #E57FB1
#E57FB1
oklch(72.3% 0.138 350.3)
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 #1BC199, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.018
- Greenblue #23C48B ΔE 0.024
- Greeny Blue #42B395 ΔE 0.040
- Topaz #13BBAF ΔE 0.041
- Dark Seafoam #1FB57A ΔE 0.047
- Dark Mint Green #20C073 ΔE 0.050
- Dark Mint #48C072 ΔE 0.051
- Green Teal #0CB577 ΔE 0.051
Use #1BC199 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.