#1BB1A1
Closest named color: Light Sea Green (#20B2AA). oklch(68.5% 0.117 183.3), rgb(27, 177, 161).
Aa
Black text reads best on this color (7.85:1).
About this color
#1BB1A1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.117 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.013 away. Black text reads best on it, at 7.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.85:1 |
| White text | 2.67:1 |
Values
| HEX | #1BB1A1 |
| RGB | rgb(27, 177, 161) |
| HSL | hsl(174, 74%, 40%) |
| OKLCH | oklch(68.5% 0.117 183.3) |
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 #1BB1A1 | 2.67:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #1BB1A1 | 7.85:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #1BB1A1 text on white | 2.67:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #1BB1A1 text on black | 7.85:1 | AAA | Lc -50.4 | 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
#DBEFEB
oklch(93.6% 0.022 182.5)
-
Step 200
200
#BCE2DC
oklch(88.4% 0.041 184.8)
-
Step 300
300
#89D1C5
oklch(81% 0.074 182.8)
-
Step 400
400 (this color)
#1BB1A1
oklch(68.5% 0.117 183.3)
-
Step 500
500
#009F90
oklch(63.1% 0.112 183.2)
-
Step 600
600
#008679
oklch(55.7% 0.099 183.1)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#1BB1A1 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) | #A8A6A0 | 0.125 |
| Deuteranopia (no green cones) | #9598A3 | 0.119 |
| Tritanopia (no blue cones) | #00B5AC | 0.016 |
| Achromatopsia (no color) | #9E9E9E | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BB1A1
#1BB1A1
oklch(68.5% 0.117 183.3)
- #D57992
#D57992
oklch(68.4% 0.117 3.2)
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 #1BB1A1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.013
- Greeny Blue #42B395 ΔE 0.025
- Topaz #13BBAF ΔE 0.030
- Turquoise Blue #06B1C4 ΔE 0.053
- Bluey Green #2BB179 ΔE 0.057
- Persian Green #2A9D8F ΔE 0.057
- Tea #65AB7C ΔE 0.058
- Dark Seafoam Green #3EAF76 ΔE 0.059
Use #1BB1A1 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.