#1BBC99
Closest named color: Green Blue (#01C08D). oklch(71.1% 0.133 172.5), rgb(27, 188, 153).
Aa
Black text reads best on this color (8.69:1).
About this color
#1BBC99 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.133 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.024 away. Black text reads best on it, at 8.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Green Blue (#01C08D) |
| Black text | 8.69:1 |
| White text | 2.41:1 |
Values
| HEX | #1BBC99 |
| RGB | rgb(27, 188, 153) |
| HSL | hsl(167, 75%, 42%) |
| OKLCH | oklch(71.1% 0.133 172.5) |
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 #1BBC99 | 2.41:1 | Fails | Lc -52.0 | Large or bold text, headings |
| Black text on #1BBC99 | 8.69:1 | AAA | Lc 57.0 | Large or bold text, headings |
| #1BBC99 text on white | 2.41:1 | Fails | Lc 47.0 | Large or bold text, headings |
| #1BBC99 text on black | 8.69:1 | AAA | Lc -55.0 | 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
#EEF8F5
oklch(97.1% 0.011 176.3)
-
Step 100
100
#DBEFE8
oklch(93.5% 0.023 172.8)
-
Step 200
200
#BBE4D6
oklch(88.6% 0.047 172.5)
-
Step 300
300
#87D2BB
oklch(80.8% 0.082 172.8)
-
Step 400
400 (this color)
#1BBC99
oklch(71.1% 0.133 172.5)
-
Step 500
500
#00A182
oklch(63.2% 0.122 172.6)
-
Step 600
600
#00876D
oklch(55.6% 0.107 172.9)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#1BBC99 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) | #B6AF97 | 0.137 |
| Deuteranopia (no green cones) | #A3A19B | 0.132 |
| Tritanopia (no blue cones) | #00BEB2 | 0.035 |
| Achromatopsia (no color) | #A7A7A7 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BBC99
#1BBC99
oklch(71.1% 0.133 172.5)
- #E07DAA
#E07DAA
oklch(71.1% 0.133 352.3)
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 #1BBC99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.024
- Greeny Blue #42B395 ΔE 0.027
- Topaz #13BBAF ΔE 0.033
- Greenblue #23C48B ΔE 0.035
- Dark Seafoam #1FB57A ΔE 0.042
- Light Sea Green #20B2AA ΔE 0.044
- Bluey Green #2BB179 ΔE 0.046
- Green Teal #0CB577 ΔE 0.047
Use #1BBC99 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.