#1BB09A
Closest named color: Greeny Blue (#42B395). oklch(68% 0.12 179.2), rgb(27, 176, 154).
Aa
Black text reads best on this color (7.72:1).
About this color
#1BB09A is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 68%, its chroma 0.120 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.022 away. Black text reads best on it, at 7.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 7.72:1 |
| White text | 2.71:1 |
Values
| HEX | #1BB09A |
| RGB | rgb(27, 176, 154) |
| HSL | hsl(171, 73%, 40%) |
| OKLCH | oklch(68% 0.12 179.2) |
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 #1BB09A | 2.71:1 | Fails | Lc -57.4 | Large or bold text, headings |
| Black text on #1BB09A | 7.72:1 | AAA | Lc 51.9 | Large or bold text, headings |
| #1BB09A text on white | 2.71:1 | Fails | Lc 52.2 | Large or bold text, headings |
| #1BB09A text on black | 7.72:1 | AAA | Lc -49.7 | 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
#EFF8F5
oklch(97.2% 0.01 174.3)
-
Step 100
100
#DBEFEA
oklch(93.6% 0.022 179.2)
-
Step 200
200
#BDE3DA
oklch(88.6% 0.042 179.3)
-
Step 300
300
#8AD1C2
oklch(80.9% 0.075 179.5)
-
Step 400
400 (this color)
#1BB09A
oklch(68% 0.12 179.2)
-
Step 500
500
#00A08B
oklch(63.2% 0.115 179)
-
Step 600
600
#008675
oklch(55.5% 0.101 179.7)
-
Step 700
700
#007162
oklch(49.1% 0.09 179.3)
-
Step 800
800
#005D50
oklch(42.8% 0.078 178.9)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#1BB09A 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) | #A8A599 | 0.126 |
| Deuteranopia (no green cones) | #96979C | 0.121 |
| Tritanopia (no blue cones) | #00B3A9 | 0.021 |
| Achromatopsia (no color) | #9D9D9D | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BB09A
#1BB09A
oklch(68% 0.12 179.2)
- #D37796
#D37796
oklch(67.9% 0.12 359.2)
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 #1BB09A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.022
- Light Sea Green #20B2AA ΔE 0.023
- Topaz #13BBAF ΔE 0.037
- Bluey Green #2BB179 ΔE 0.048
- Dark Seafoam Green #3EAF76 ΔE 0.049
- Dark Seafoam #1FB57A ΔE 0.052
- Tea #65AB7C ΔE 0.052
- Jade #1FA774 ΔE 0.053
Use #1BB09A 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.