#1BBBA0
Closest named color: Topaz (#13BBAF). oklch(71% 0.127 177), rgb(27, 187, 160).
Aa
Black text reads best on this color (8.66:1).
About this color
#1BBBA0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.127 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.022 away. Black text reads best on it, at 8.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.66:1 |
| White text | 2.42:1 |
Values
| HEX | #1BBBA0 |
| RGB | rgb(27, 187, 160) |
| HSL | hsl(170, 75%, 42%) |
| OKLCH | oklch(71% 0.127 177) |
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 #1BBBA0 | 2.42:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #1BBBA0 | 8.66:1 | AAA | Lc 56.8 | Large or bold text, headings |
| #1BBBA0 text on white | 2.42:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #1BBBA0 text on black | 8.66:1 | AAA | Lc -54.8 | 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
#DBEFE9
oklch(93.6% 0.023 175.9)
-
Step 200
200
#BBE3D8
oklch(88.4% 0.044 176.7)
-
Step 300
300
#87D2C0
oklch(81% 0.079 177.3)
-
Step 400
400 (this color)
#1BBBA0
oklch(71% 0.127 177)
-
Step 500
500
#00A088
oklch(63.1% 0.117 177)
-
Step 600
600
#008772
oklch(55.7% 0.104 176.6)
-
Step 700
700
#007160
oklch(49.1% 0.091 177.4)
-
Step 800
800
#005D4E
oklch(42.8% 0.079 176.7)
-
Step 900
900
#004D41
oklch(37.6% 0.069 177.7)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#1BBBA0 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) | #B3AF9F | 0.133 |
| Deuteranopia (no green cones) | #A0A0A2 | 0.129 |
| Tritanopia (no blue cones) | #00BEB3 | 0.026 |
| Achromatopsia (no color) | #A6A6A6 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BBBA0
#1BBBA0
oklch(71% 0.127 177)
- #E07EA3
#E07EA3
oklch(71% 0.128 356.8)
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 #1BBBA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.022
- Greeny Blue #42B395 ΔE 0.025
- Light Sea Green #20B2AA ΔE 0.034
- Green Blue #01C08D ΔE 0.035
- Greenblue #23C48B ΔE 0.046
- Dark Seafoam #1FB57A ΔE 0.051
- Bluey Green #2BB179 ΔE 0.053
- Green Teal #0CB577 ΔE 0.056
Use #1BBBA0 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.